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Diffstat (limited to 'openssl/crypto/evp/e_aes.c')
| -rw-r--r-- | openssl/crypto/evp/e_aes.c | 2024 |
1 files changed, 2024 insertions, 0 deletions
diff --git a/openssl/crypto/evp/e_aes.c b/openssl/crypto/evp/e_aes.c new file mode 100644 index 0000000..7c62d32 --- /dev/null +++ b/openssl/crypto/evp/e_aes.c @@ -0,0 +1,2024 @@ +/* ==================================================================== + * Copyright (c) 2001-2011 The OpenSSL Project. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. All advertising materials mentioning features or use of this + * software must display the following acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * openssl-core@openssl.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.openssl.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * ==================================================================== + * + */ + +#include <openssl/opensslconf.h> +#ifndef OPENSSL_NO_AES +#include <openssl/crypto.h> +# include <openssl/evp.h> +# include <openssl/err.h> +# include <string.h> +# include <assert.h> +# include <openssl/aes.h> +# include "evp_locl.h" +# include "modes_lcl.h" +# include <openssl/rand.h> + +# undef EVP_CIPH_FLAG_FIPS +# define EVP_CIPH_FLAG_FIPS 0 + +typedef struct { + union { + double align; + AES_KEY ks; + } ks; + block128_f block; + union { + cbc128_f cbc; + ctr128_f ctr; + } stream; +} EVP_AES_KEY; + +typedef struct { + union { + double align; + AES_KEY ks; + } ks; /* AES key schedule to use */ + int key_set; /* Set if key initialised */ + int iv_set; /* Set if an iv is set */ + GCM128_CONTEXT gcm; + unsigned char *iv; /* Temporary IV store */ + int ivlen; /* IV length */ + int taglen; + int iv_gen; /* It is OK to generate IVs */ + int tls_aad_len; /* TLS AAD length */ + ctr128_f ctr; +} EVP_AES_GCM_CTX; + +typedef struct { + union { + double align; + AES_KEY ks; + } ks1, ks2; /* AES key schedules to use */ + XTS128_CONTEXT xts; + void (*stream) (const unsigned char *in, + unsigned char *out, size_t length, + const AES_KEY *key1, const AES_KEY *key2, + const unsigned char iv[16]); +} EVP_AES_XTS_CTX; + +typedef struct { + union { + double align; + AES_KEY ks; + } ks; /* AES key schedule to use */ + int key_set; /* Set if key initialised */ + int iv_set; /* Set if an iv is set */ + int tag_set; /* Set if tag is valid */ + int len_set; /* Set if message length set */ + int L, M; /* L and M parameters from RFC3610 */ + CCM128_CONTEXT ccm; + ccm128_f str; +} EVP_AES_CCM_CTX; + +# define MAXBITCHUNK ((size_t)1<<(sizeof(size_t)*8-4)) + +# ifdef VPAES_ASM +int vpaes_set_encrypt_key(const unsigned char *userKey, int bits, + AES_KEY *key); +int vpaes_set_decrypt_key(const unsigned char *userKey, int bits, + AES_KEY *key); + +void vpaes_encrypt(const unsigned char *in, unsigned char *out, + const AES_KEY *key); +void vpaes_decrypt(const unsigned char *in, unsigned char *out, + const AES_KEY *key); + +void vpaes_cbc_encrypt(const unsigned char *in, + unsigned char *out, + size_t length, + const AES_KEY *key, unsigned char *ivec, int enc); +# endif +# ifdef BSAES_ASM +void bsaes_cbc_encrypt(const unsigned char *in, unsigned char *out, + size_t length, const AES_KEY *key, + unsigned char ivec[16], int enc); +void bsaes_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out, + size_t len, const AES_KEY *key, + const unsigned char ivec[16]); +void bsaes_xts_encrypt(const unsigned char *inp, unsigned char *out, + size_t len, const AES_KEY *key1, + const AES_KEY *key2, const unsigned char iv[16]); +void bsaes_xts_decrypt(const unsigned char *inp, unsigned char *out, + size_t len, const AES_KEY *key1, + const AES_KEY *key2, const unsigned char iv[16]); +# endif +# ifdef AES_CTR_ASM +void AES_ctr32_encrypt(const unsigned char *in, unsigned char *out, + size_t blocks, const AES_KEY *key, + const unsigned char ivec[AES_BLOCK_SIZE]); +# endif +# ifdef AES_XTS_ASM +void AES_xts_encrypt(const unsigned char *inp, unsigned char *out, size_t len, + const AES_KEY *key1, const AES_KEY *key2, + const unsigned char iv[16]); +void AES_xts_decrypt(const unsigned char *inp, unsigned char *out, size_t len, + const AES_KEY *key1, const AES_KEY *key2, + const unsigned char iv[16]); +# endif + +# if defined(OPENSSL_CPUID_OBJ) && (defined(__powerpc__) || defined(__ppc__) || defined(_ARCH_PPC)) +# include "ppc_arch.h" +# ifdef VPAES_ASM +# define VPAES_CAPABLE (OPENSSL_ppccap_P & PPC_ALTIVEC) +# endif +# define HWAES_CAPABLE (OPENSSL_ppccap_P & PPC_CRYPTO207) +# define HWAES_set_encrypt_key aes_p8_set_encrypt_key +# define HWAES_set_decrypt_key aes_p8_set_decrypt_key +# define HWAES_encrypt aes_p8_encrypt +# define HWAES_decrypt aes_p8_decrypt +# define HWAES_cbc_encrypt aes_p8_cbc_encrypt +# define HWAES_ctr32_encrypt_blocks aes_p8_ctr32_encrypt_blocks +# endif + +# if defined(AES_ASM) && !defined(I386_ONLY) && ( \ + ((defined(__i386) || defined(__i386__) || \ + defined(_M_IX86)) && defined(OPENSSL_IA32_SSE2))|| \ + defined(__x86_64) || defined(__x86_64__) || \ + defined(_M_AMD64) || defined(_M_X64) || \ + defined(__INTEL__) ) + +extern unsigned int OPENSSL_ia32cap_P[]; + +# ifdef VPAES_ASM +# define VPAES_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(41-32))) +# endif +# ifdef BSAES_ASM +# define BSAES_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(41-32))) +# endif +/* + * AES-NI section + */ +# define AESNI_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(57-32))) + +int aesni_set_encrypt_key(const unsigned char *userKey, int bits, + AES_KEY *key); +int aesni_set_decrypt_key(const unsigned char *userKey, int bits, + AES_KEY *key); + +void aesni_encrypt(const unsigned char *in, unsigned char *out, + const AES_KEY *key); +void aesni_decrypt(const unsigned char *in, unsigned char *out, + const AES_KEY *key); + +void aesni_ecb_encrypt(const unsigned char *in, + unsigned char *out, + size_t length, const AES_KEY *key, int enc); +void aesni_cbc_encrypt(const unsigned char *in, + unsigned char *out, + size_t length, + const AES_KEY *key, unsigned char *ivec, int enc); + +void aesni_ctr32_encrypt_blocks(const unsigned char *in, + unsigned char *out, + size_t blocks, + const void *key, const unsigned char *ivec); + +void aesni_xts_encrypt(const unsigned char *in, + unsigned char *out, + size_t length, + const AES_KEY *key1, const AES_KEY *key2, + const unsigned char iv[16]); + +void aesni_xts_decrypt(const unsigned char *in, + unsigned char *out, + size_t length, + const AES_KEY *key1, const AES_KEY *key2, + const unsigned char iv[16]); + +void aesni_ccm64_encrypt_blocks(const unsigned char *in, + unsigned char *out, + size_t blocks, + const void *key, + const unsigned char ivec[16], + unsigned char cmac[16]); + +void aesni_ccm64_decrypt_blocks(const unsigned char *in, + unsigned char *out, + size_t blocks, + const void *key, + const unsigned char ivec[16], + unsigned char cmac[16]); + +# if defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64) +size_t aesni_gcm_encrypt(const unsigned char *in, + unsigned char *out, + size_t len, + const void *key, unsigned char ivec[16], u64 *Xi); +# define AES_gcm_encrypt aesni_gcm_encrypt +size_t aesni_gcm_decrypt(const unsigned char *in, + unsigned char *out, + size_t len, + const void *key, unsigned char ivec[16], u64 *Xi); +# define AES_gcm_decrypt aesni_gcm_decrypt +void gcm_ghash_avx(u64 Xi[2], const u128 Htable[16], const u8 *in, + size_t len); +# define AES_GCM_ASM(gctx) (gctx->ctr==aesni_ctr32_encrypt_blocks && \ + gctx->gcm.ghash==gcm_ghash_avx) +# define AES_GCM_ASM2(gctx) (gctx->gcm.block==(block128_f)aesni_encrypt && \ + gctx->gcm.ghash==gcm_ghash_avx) +# undef AES_GCM_ASM2 /* minor size optimization */ +# endif + +static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc) +{ + int ret, mode; + EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; + + mode = ctx->cipher->flags & EVP_CIPH_MODE; + if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) + && !enc) { + ret = aesni_set_decrypt_key(key, ctx->key_len * 8, ctx->cipher_data); + dat->block = (block128_f) aesni_decrypt; + dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? + (cbc128_f) aesni_cbc_encrypt : NULL; + } else { + ret = aesni_set_encrypt_key(key, ctx->key_len * 8, ctx->cipher_data); + dat->block = (block128_f) aesni_encrypt; + if (mode == EVP_CIPH_CBC_MODE) + dat->stream.cbc = (cbc128_f) aesni_cbc_encrypt; + else if (mode == EVP_CIPH_CTR_MODE) + dat->stream.ctr = (ctr128_f) aesni_ctr32_encrypt_blocks; + else + dat->stream.cbc = NULL; + } + + if (ret < 0) { + EVPerr(EVP_F_AESNI_INIT_KEY, EVP_R_AES_KEY_SETUP_FAILED); + return 0; + } + + return 1; +} + +static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) +{ + aesni_cbc_encrypt(in, out, len, ctx->cipher_data, ctx->iv, ctx->encrypt); + + return 1; +} + +static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) +{ + size_t bl = ctx->cipher->block_size; + + if (len < bl) + return 1; + + aesni_ecb_encrypt(in, out, len, ctx->cipher_data, ctx->encrypt); + + return 1; +} + +# define aesni_ofb_cipher aes_ofb_cipher +static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); + +# define aesni_cfb_cipher aes_cfb_cipher +static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); + +# define aesni_cfb8_cipher aes_cfb8_cipher +static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); + +# define aesni_cfb1_cipher aes_cfb1_cipher +static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); + +# define aesni_ctr_cipher aes_ctr_cipher +static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); + +static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc) +{ + EVP_AES_GCM_CTX *gctx = ctx->cipher_data; + if (!iv && !key) + return 1; + if (key) { + aesni_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks); + CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f) aesni_encrypt); + gctx->ctr = (ctr128_f) aesni_ctr32_encrypt_blocks; + /* + * If we have an iv can set it directly, otherwise use saved IV. + */ + if (iv == NULL && gctx->iv_set) + iv = gctx->iv; + if (iv) { + CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); + gctx->iv_set = 1; + } + gctx->key_set = 1; + } else { + /* If key set use IV, otherwise copy */ + if (gctx->key_set) + CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); + else + memcpy(gctx->iv, iv, gctx->ivlen); + gctx->iv_set = 1; + gctx->iv_gen = 0; + } + return 1; +} + +# define aesni_gcm_cipher aes_gcm_cipher +static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); + +static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc) +{ + EVP_AES_XTS_CTX *xctx = ctx->cipher_data; + if (!iv && !key) + return 1; + + if (key) { + /* key_len is two AES keys */ + if (enc) { + aesni_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks); + xctx->xts.block1 = (block128_f) aesni_encrypt; + xctx->stream = aesni_xts_encrypt; + } else { + aesni_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks); + xctx->xts.block1 = (block128_f) aesni_decrypt; + xctx->stream = aesni_xts_decrypt; + } + + aesni_set_encrypt_key(key + ctx->key_len / 2, + ctx->key_len * 4, &xctx->ks2.ks); + xctx->xts.block2 = (block128_f) aesni_encrypt; + + xctx->xts.key1 = &xctx->ks1; + } + + if (iv) { + xctx->xts.key2 = &xctx->ks2; + memcpy(ctx->iv, iv, 16); + } + + return 1; +} + +# define aesni_xts_cipher aes_xts_cipher +static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); + +static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc) +{ + EVP_AES_CCM_CTX *cctx = ctx->cipher_data; + if (!iv && !key) + return 1; + if (key) { + aesni_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks.ks); + CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, + &cctx->ks, (block128_f) aesni_encrypt); + cctx->str = enc ? (ccm128_f) aesni_ccm64_encrypt_blocks : + (ccm128_f) aesni_ccm64_decrypt_blocks; + cctx->key_set = 1; + } + if (iv) { + memcpy(ctx->iv, iv, 15 - cctx->L); + cctx->iv_set = 1; + } + return 1; +} + +# define aesni_ccm_cipher aes_ccm_cipher +static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); + +# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ +static const EVP_CIPHER aesni_##keylen##_##mode = { \ + nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \ + flags|EVP_CIPH_##MODE##_MODE, \ + aesni_init_key, \ + aesni_##mode##_cipher, \ + NULL, \ + sizeof(EVP_AES_KEY), \ + NULL,NULL,NULL,NULL }; \ +static const EVP_CIPHER aes_##keylen##_##mode = { \ + nid##_##keylen##_##nmode,blocksize, \ + keylen/8,ivlen, \ + flags|EVP_CIPH_##MODE##_MODE, \ + aes_init_key, \ + aes_##mode##_cipher, \ + NULL, \ + sizeof(EVP_AES_KEY), \ + NULL,NULL,NULL,NULL }; \ +const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ +{ return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; } + +# define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \ +static const EVP_CIPHER aesni_##keylen##_##mode = { \ + nid##_##keylen##_##mode,blocksize, \ + (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \ + flags|EVP_CIPH_##MODE##_MODE, \ + aesni_##mode##_init_key, \ + aesni_##mode##_cipher, \ + aes_##mode##_cleanup, \ + sizeof(EVP_AES_##MODE##_CTX), \ + NULL,NULL,aes_##mode##_ctrl,NULL }; \ +static const EVP_CIPHER aes_##keylen##_##mode = { \ + nid##_##keylen##_##mode,blocksize, \ + (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \ + flags|EVP_CIPH_##MODE##_MODE, \ + aes_##mode##_init_key, \ + aes_##mode##_cipher, \ + aes_##mode##_cleanup, \ + sizeof(EVP_AES_##MODE##_CTX), \ + NULL,NULL,aes_##mode##_ctrl,NULL }; \ +const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ +{ return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; } + +# elif defined(AES_ASM) && (defined(__sparc) || defined(__sparc__)) + +# include "sparc_arch.h" + +extern unsigned int OPENSSL_sparcv9cap_P[]; + +# define SPARC_AES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_AES) + +void aes_t4_set_encrypt_key(const unsigned char *key, int bits, AES_KEY *ks); +void aes_t4_set_decrypt_key(const unsigned char *key, int bits, AES_KEY *ks); +void aes_t4_encrypt(const unsigned char *in, unsigned char *out, + const AES_KEY *key); +void aes_t4_decrypt(const unsigned char *in, unsigned char *out, + const AES_KEY *key); +/* + * Key-length specific subroutines were chosen for following reason. + * Each SPARC T4 core can execute up to 8 threads which share core's + * resources. Loading as much key material to registers allows to + * minimize references to shared memory interface, as well as amount + * of instructions in inner loops [much needed on T4]. But then having + * non-key-length specific routines would require conditional branches + * either in inner loops or on subroutines' entries. Former is hardly + * acceptable, while latter means code size increase to size occupied + * by multiple key-length specfic subroutines, so why fight? + */ +void aes128_t4_cbc_encrypt(const unsigned char *in, unsigned char *out, + size_t len, const AES_KEY *key, + unsigned char *ivec); +void aes128_t4_cbc_decrypt(const unsigned char *in, unsigned char *out, + size_t len, const AES_KEY *key, + unsigned char *ivec); +void aes192_t4_cbc_encrypt(const unsigned char *in, unsigned char *out, + size_t len, const AES_KEY *key, + unsigned char *ivec); +void aes192_t4_cbc_decrypt(const unsigned char *in, unsigned char *out, + size_t len, const AES_KEY *key, + unsigned char *ivec); +void aes256_t4_cbc_encrypt(const unsigned char *in, unsigned char *out, + size_t len, const AES_KEY *key, + unsigned char *ivec); +void aes256_t4_cbc_decrypt(const unsigned char *in, unsigned char *out, + size_t len, const AES_KEY *key, + unsigned char *ivec); +void aes128_t4_ctr32_encrypt(const unsigned char *in, unsigned char *out, + size_t blocks, const AES_KEY *key, + unsigned char *ivec); +void aes192_t4_ctr32_encrypt(const unsigned char *in, unsigned char *out, + size_t blocks, const AES_KEY *key, + unsigned char *ivec); +void aes256_t4_ctr32_encrypt(const unsigned char *in, unsigned char *out, + size_t blocks, const AES_KEY *key, + unsigned char *ivec); +void aes128_t4_xts_encrypt(const unsigned char *in, unsigned char *out, + size_t blocks, const AES_KEY *key1, + const AES_KEY *key2, const unsigned char *ivec); +void aes128_t4_xts_decrypt(const unsigned char *in, unsigned char *out, + size_t blocks, const AES_KEY *key1, + const AES_KEY *key2, const unsigned char *ivec); +void aes256_t4_xts_encrypt(const unsigned char *in, unsigned char *out, + size_t blocks, const AES_KEY *key1, + const AES_KEY *key2, const unsigned char *ivec); +void aes256_t4_xts_decrypt(const unsigned char *in, unsigned char *out, + size_t blocks, const AES_KEY *key1, + const AES_KEY *key2, const unsigned char *ivec); + +static int aes_t4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc) +{ + int ret, mode, bits; + EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; + + mode = ctx->cipher->flags & EVP_CIPH_MODE; + bits = ctx->key_len * 8; + if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) + && !enc) { + ret = 0; + aes_t4_set_decrypt_key(key, bits, ctx->cipher_data); + dat->block = (block128_f) aes_t4_decrypt; + switch (bits) { + case 128: + dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? + (cbc128_f) aes128_t4_cbc_decrypt : NULL; + break; + case 192: + dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? + (cbc128_f) aes192_t4_cbc_decrypt : NULL; + break; + case 256: + dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? + (cbc128_f) aes256_t4_cbc_decrypt : NULL; + break; + default: + ret = -1; + } + } else { + ret = 0; + aes_t4_set_encrypt_key(key, bits, ctx->cipher_data); + dat->block = (block128_f) aes_t4_encrypt; + switch (bits) { + case 128: + if (mode == EVP_CIPH_CBC_MODE) + dat->stream.cbc = (cbc128_f) aes128_t4_cbc_encrypt; + else if (mode == EVP_CIPH_CTR_MODE) + dat->stream.ctr = (ctr128_f) aes128_t4_ctr32_encrypt; + else + dat->stream.cbc = NULL; + break; + case 192: + if (mode == EVP_CIPH_CBC_MODE) + dat->stream.cbc = (cbc128_f) aes192_t4_cbc_encrypt; + else if (mode == EVP_CIPH_CTR_MODE) + dat->stream.ctr = (ctr128_f) aes192_t4_ctr32_encrypt; + else + dat->stream.cbc = NULL; + break; + case 256: + if (mode == EVP_CIPH_CBC_MODE) + dat->stream.cbc = (cbc128_f) aes256_t4_cbc_encrypt; + else if (mode == EVP_CIPH_CTR_MODE) + dat->stream.ctr = (ctr128_f) aes256_t4_ctr32_encrypt; + else + dat->stream.cbc = NULL; + break; + default: + ret = -1; + } + } + + if (ret < 0) { + EVPerr(EVP_F_AES_T4_INIT_KEY, EVP_R_AES_KEY_SETUP_FAILED); + return 0; + } + + return 1; +} + +# define aes_t4_cbc_cipher aes_cbc_cipher +static int aes_t4_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); + +# define aes_t4_ecb_cipher aes_ecb_cipher +static int aes_t4_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); + +# define aes_t4_ofb_cipher aes_ofb_cipher +static int aes_t4_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); + +# define aes_t4_cfb_cipher aes_cfb_cipher +static int aes_t4_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); + +# define aes_t4_cfb8_cipher aes_cfb8_cipher +static int aes_t4_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); + +# define aes_t4_cfb1_cipher aes_cfb1_cipher +static int aes_t4_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); + +# define aes_t4_ctr_cipher aes_ctr_cipher +static int aes_t4_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); + +static int aes_t4_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc) +{ + EVP_AES_GCM_CTX *gctx = ctx->cipher_data; + if (!iv && !key) + return 1; + if (key) { + int bits = ctx->key_len * 8; + aes_t4_set_encrypt_key(key, bits, &gctx->ks.ks); + CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, + (block128_f) aes_t4_encrypt); + switch (bits) { + case 128: + gctx->ctr = (ctr128_f) aes128_t4_ctr32_encrypt; + break; + case 192: + gctx->ctr = (ctr128_f) aes192_t4_ctr32_encrypt; + break; + case 256: + gctx->ctr = (ctr128_f) aes256_t4_ctr32_encrypt; + break; + default: + return 0; + } + /* + * If we have an iv can set it directly, otherwise use saved IV. + */ + if (iv == NULL && gctx->iv_set) + iv = gctx->iv; + if (iv) { + CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); + gctx->iv_set = 1; + } + gctx->key_set = 1; + } else { + /* If key set use IV, otherwise copy */ + if (gctx->key_set) + CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); + else + memcpy(gctx->iv, iv, gctx->ivlen); + gctx->iv_set = 1; + gctx->iv_gen = 0; + } + return 1; +} + +# define aes_t4_gcm_cipher aes_gcm_cipher +static int aes_t4_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); + +static int aes_t4_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc) +{ + EVP_AES_XTS_CTX *xctx = ctx->cipher_data; + if (!iv && !key) + return 1; + + if (key) { + int bits = ctx->key_len * 4; + xctx->stream = NULL; + /* key_len is two AES keys */ + if (enc) { + aes_t4_set_encrypt_key(key, bits, &xctx->ks1.ks); + xctx->xts.block1 = (block128_f) aes_t4_encrypt; + switch (bits) { + case 128: + xctx->stream = aes128_t4_xts_encrypt; + break; +# if 0 /* not yet */ + case 192: + xctx->stream = aes192_t4_xts_encrypt; + break; +# endif + case 256: + xctx->stream = aes256_t4_xts_encrypt; + break; + default: + return 0; + } + } else { + aes_t4_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks); + xctx->xts.block1 = (block128_f) aes_t4_decrypt; + switch (bits) { + case 128: + xctx->stream = aes128_t4_xts_decrypt; + break; +# if 0 /* not yet */ + case 192: + xctx->stream = aes192_t4_xts_decrypt; + break; +# endif + case 256: + xctx->stream = aes256_t4_xts_decrypt; + break; + default: + return 0; + } + } + + aes_t4_set_encrypt_key(key + ctx->key_len / 2, + ctx->key_len * 4, &xctx->ks2.ks); + xctx->xts.block2 = (block128_f) aes_t4_encrypt; + + xctx->xts.key1 = &xctx->ks1; + } + + if (iv) { + xctx->xts.key2 = &xctx->ks2; + memcpy(ctx->iv, iv, 16); + } + + return 1; +} + +# define aes_t4_xts_cipher aes_xts_cipher +static int aes_t4_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); + +static int aes_t4_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc) +{ + EVP_AES_CCM_CTX *cctx = ctx->cipher_data; + if (!iv && !key) + return 1; + if (key) { + int bits = ctx->key_len * 8; + aes_t4_set_encrypt_key(key, bits, &cctx->ks.ks); + CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, + &cctx->ks, (block128_f) aes_t4_encrypt); +# if 0 /* not yet */ + switch (bits) { + case 128: + cctx->str = enc ? (ccm128_f) aes128_t4_ccm64_encrypt : + (ccm128_f) ae128_t4_ccm64_decrypt; + break; + case 192: + cctx->str = enc ? (ccm128_f) aes192_t4_ccm64_encrypt : + (ccm128_f) ae192_t4_ccm64_decrypt; + break; + case 256: + cctx->str = enc ? (ccm128_f) aes256_t4_ccm64_encrypt : + (ccm128_f) ae256_t4_ccm64_decrypt; + break; + default: + return 0; + } +# else + cctx->str = NULL; +# endif + cctx->key_set = 1; + } + if (iv) { + memcpy(ctx->iv, iv, 15 - cctx->L); + cctx->iv_set = 1; + } + return 1; +} + +# define aes_t4_ccm_cipher aes_ccm_cipher +static int aes_t4_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); + +# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ +static const EVP_CIPHER aes_t4_##keylen##_##mode = { \ + nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \ + flags|EVP_CIPH_##MODE##_MODE, \ + aes_t4_init_key, \ + aes_t4_##mode##_cipher, \ + NULL, \ + sizeof(EVP_AES_KEY), \ + NULL,NULL,NULL,NULL }; \ +static const EVP_CIPHER aes_##keylen##_##mode = { \ + nid##_##keylen##_##nmode,blocksize, \ + keylen/8,ivlen, \ + flags|EVP_CIPH_##MODE##_MODE, \ + aes_init_key, \ + aes_##mode##_cipher, \ + NULL, \ + sizeof(EVP_AES_KEY), \ + NULL,NULL,NULL,NULL }; \ +const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ +{ return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; } + +# define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \ +static const EVP_CIPHER aes_t4_##keylen##_##mode = { \ + nid##_##keylen##_##mode,blocksize, \ + (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \ + flags|EVP_CIPH_##MODE##_MODE, \ + aes_t4_##mode##_init_key, \ + aes_t4_##mode##_cipher, \ + aes_##mode##_cleanup, \ + sizeof(EVP_AES_##MODE##_CTX), \ + NULL,NULL,aes_##mode##_ctrl,NULL }; \ +static const EVP_CIPHER aes_##keylen##_##mode = { \ + nid##_##keylen##_##mode,blocksize, \ + (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \ + flags|EVP_CIPH_##MODE##_MODE, \ + aes_##mode##_init_key, \ + aes_##mode##_cipher, \ + aes_##mode##_cleanup, \ + sizeof(EVP_AES_##MODE##_CTX), \ + NULL,NULL,aes_##mode##_ctrl,NULL }; \ +const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ +{ return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; } + +# else + +# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ +static const EVP_CIPHER aes_##keylen##_##mode = { \ + nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \ + flags|EVP_CIPH_##MODE##_MODE, \ + aes_init_key, \ + aes_##mode##_cipher, \ + NULL, \ + sizeof(EVP_AES_KEY), \ + NULL,NULL,NULL,NULL }; \ +const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ +{ return &aes_##keylen##_##mode; } + +# define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \ +static const EVP_CIPHER aes_##keylen##_##mode = { \ + nid##_##keylen##_##mode,blocksize, \ + (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \ + flags|EVP_CIPH_##MODE##_MODE, \ + aes_##mode##_init_key, \ + aes_##mode##_cipher, \ + aes_##mode##_cleanup, \ + sizeof(EVP_AES_##MODE##_CTX), \ + NULL,NULL,aes_##mode##_ctrl,NULL }; \ +const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ +{ return &aes_##keylen##_##mode; } +# endif + +# if defined(OPENSSL_CPUID_OBJ) && (defined(__arm__) || defined(__arm) || defined(__aarch64__)) +# include "arm_arch.h" +# if __ARM_MAX_ARCH__>=7 +# if defined(BSAES_ASM) +# define BSAES_CAPABLE (OPENSSL_armcap_P & ARMV7_NEON) +# endif +# define HWAES_CAPABLE (OPENSSL_armcap_P & ARMV8_AES) +# define HWAES_set_encrypt_key aes_v8_set_encrypt_key +# define HWAES_set_decrypt_key aes_v8_set_decrypt_key +# define HWAES_encrypt aes_v8_encrypt +# define HWAES_decrypt aes_v8_decrypt +# define HWAES_cbc_encrypt aes_v8_cbc_encrypt +# define HWAES_ctr32_encrypt_blocks aes_v8_ctr32_encrypt_blocks +# endif +# endif + +# if defined(HWAES_CAPABLE) +int HWAES_set_encrypt_key(const unsigned char *userKey, const int bits, + AES_KEY *key); +int HWAES_set_decrypt_key(const unsigned char *userKey, const int bits, + AES_KEY *key); +void HWAES_encrypt(const unsigned char *in, unsigned char *out, + const AES_KEY *key); +void HWAES_decrypt(const unsigned char *in, unsigned char *out, + const AES_KEY *key); +void HWAES_cbc_encrypt(const unsigned char *in, unsigned char *out, + size_t length, const AES_KEY *key, + unsigned char *ivec, const int enc); +void HWAES_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out, + size_t len, const AES_KEY *key, + const unsigned char ivec[16]); +# endif + +# define BLOCK_CIPHER_generic_pack(nid,keylen,flags) \ + BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ + BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ + BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ + BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ + BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags) \ + BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags) \ + BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags) + +static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc) +{ + int ret, mode; + EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; + + mode = ctx->cipher->flags & EVP_CIPH_MODE; + if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) + && !enc) +# ifdef HWAES_CAPABLE + if (HWAES_CAPABLE) { + ret = HWAES_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks); + dat->block = (block128_f) HWAES_decrypt; + dat->stream.cbc = NULL; +# ifdef HWAES_cbc_encrypt + if (mode == EVP_CIPH_CBC_MODE) + dat->stream.cbc = (cbc128_f) HWAES_cbc_encrypt; +# endif + } else +# endif +# ifdef BSAES_CAPABLE + if (BSAES_CAPABLE && mode == EVP_CIPH_CBC_MODE) { + ret = AES_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks); + dat->block = (block128_f) AES_decrypt; + dat->stream.cbc = (cbc128_f) bsaes_cbc_encrypt; + } else +# endif +# ifdef VPAES_CAPABLE + if (VPAES_CAPABLE) { + ret = vpaes_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks); + dat->block = (block128_f) vpaes_decrypt; + dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? + (cbc128_f) vpaes_cbc_encrypt : NULL; + } else +# endif + { + ret = AES_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks); + dat->block = (block128_f) AES_decrypt; + dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? + (cbc128_f) AES_cbc_encrypt : NULL; + } else +# ifdef HWAES_CAPABLE + if (HWAES_CAPABLE) { + ret = HWAES_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks); + dat->block = (block128_f) HWAES_encrypt; + dat->stream.cbc = NULL; +# ifdef HWAES_cbc_encrypt + if (mode == EVP_CIPH_CBC_MODE) + dat->stream.cbc = (cbc128_f) HWAES_cbc_encrypt; + else +# endif +# ifdef HWAES_ctr32_encrypt_blocks + if (mode == EVP_CIPH_CTR_MODE) + dat->stream.ctr = (ctr128_f) HWAES_ctr32_encrypt_blocks; + else +# endif + (void)0; /* terminate potentially open 'else' */ + } else +# endif +# ifdef BSAES_CAPABLE + if (BSAES_CAPABLE && mode == EVP_CIPH_CTR_MODE) { + ret = AES_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks); + dat->block = (block128_f) AES_encrypt; + dat->stream.ctr = (ctr128_f) bsaes_ctr32_encrypt_blocks; + } else +# endif +# ifdef VPAES_CAPABLE + if (VPAES_CAPABLE) { + ret = vpaes_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks); + dat->block = (block128_f) vpaes_encrypt; + dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? + (cbc128_f) vpaes_cbc_encrypt : NULL; + } else +# endif + { + ret = AES_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks); + dat->block = (block128_f) AES_encrypt; + dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? + (cbc128_f) AES_cbc_encrypt : NULL; +# ifdef AES_CTR_ASM + if (mode == EVP_CIPH_CTR_MODE) + dat->stream.ctr = (ctr128_f) AES_ctr32_encrypt; +# endif + } + + if (ret < 0) { + EVPerr(EVP_F_AES_INIT_KEY, EVP_R_AES_KEY_SETUP_FAILED); + return 0; + } + + return 1; +} + +static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) +{ + EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; + + if (dat->stream.cbc) + (*dat->stream.cbc) (in, out, len, &dat->ks, ctx->iv, ctx->encrypt); + else if (ctx->encrypt) + CRYPTO_cbc128_encrypt(in, out, len, &dat->ks, ctx->iv, dat->block); + else + CRYPTO_cbc128_decrypt(in, out, len, &dat->ks, ctx->iv, dat->block); + + return 1; +} + +static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) +{ + size_t bl = ctx->cipher->block_size; + size_t i; + EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; + + if (len < bl) + return 1; + + for (i = 0, len -= bl; i <= len; i += bl) + (*dat->block) (in + i, out + i, &dat->ks); + + return 1; +} + +static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) +{ + EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; + + CRYPTO_ofb128_encrypt(in, out, len, &dat->ks, + ctx->iv, &ctx->num, dat->block); + return 1; +} + +static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) +{ + EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; + + CRYPTO_cfb128_encrypt(in, out, len, &dat->ks, + ctx->iv, &ctx->num, ctx->encrypt, dat->block); + return 1; +} + +static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) +{ + EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; + + CRYPTO_cfb128_8_encrypt(in, out, len, &dat->ks, + ctx->iv, &ctx->num, ctx->encrypt, dat->block); + return 1; +} + +static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) +{ + EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; + + if (ctx->flags & EVP_CIPH_FLAG_LENGTH_BITS) { + CRYPTO_cfb128_1_encrypt(in, out, len, &dat->ks, + ctx->iv, &ctx->num, ctx->encrypt, dat->block); + return 1; + } + + while (len >= MAXBITCHUNK) { + CRYPTO_cfb128_1_encrypt(in, out, MAXBITCHUNK * 8, &dat->ks, + ctx->iv, &ctx->num, ctx->encrypt, dat->block); + len -= MAXBITCHUNK; + } + if (len) + CRYPTO_cfb128_1_encrypt(in, out, len * 8, &dat->ks, + ctx->iv, &ctx->num, ctx->encrypt, dat->block); + + return 1; +} + +static int aes_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) +{ + unsigned int num = ctx->num; + EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; + + if (dat->stream.ctr) + CRYPTO_ctr128_encrypt_ctr32(in, out, len, &dat->ks, + ctx->iv, ctx->buf, &num, dat->stream.ctr); + else + CRYPTO_ctr128_encrypt(in, out, len, &dat->ks, + ctx->iv, ctx->buf, &num, dat->block); + ctx->num = (size_t)num; + return 1; +} + +BLOCK_CIPHER_generic_pack(NID_aes, 128, EVP_CIPH_FLAG_FIPS) + BLOCK_CIPHER_generic_pack(NID_aes, 192, EVP_CIPH_FLAG_FIPS) + BLOCK_CIPHER_generic_pack(NID_aes, 256, EVP_CIPH_FLAG_FIPS) + +static int aes_gcm_cleanup(EVP_CIPHER_CTX *c) +{ + EVP_AES_GCM_CTX *gctx = c->cipher_data; + OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm)); + if (gctx->iv != c->iv) + OPENSSL_free(gctx->iv); + return 1; +} + +/* increment counter (64-bit int) by 1 */ +static void ctr64_inc(unsigned char *counter) +{ + int n = 8; + unsigned char c; + + do { + --n; + c = counter[n]; + ++c; + counter[n] = c; + if (c) + return; + } while (n); +} + +static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) +{ + EVP_AES_GCM_CTX *gctx = c->cipher_data; + switch (type) { + case EVP_CTRL_INIT: + gctx->key_set = 0; + gctx->iv_set = 0; + gctx->ivlen = c->cipher->iv_len; + gctx->iv = c->iv; + gctx->taglen = -1; + gctx->iv_gen = 0; + gctx->tls_aad_len = -1; + return 1; + + case EVP_CTRL_GCM_SET_IVLEN: + if (arg <= 0) + return 0; + /* Allocate memory for IV if needed */ + if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen)) { + if (gctx->iv != c->iv) + OPENSSL_free(gctx->iv); + gctx->iv = OPENSSL_malloc(arg); + if (!gctx->iv) + return 0; + } + gctx->ivlen = arg; + return 1; + + case EVP_CTRL_GCM_SET_TAG: + if (arg <= 0 || arg > 16 || c->encrypt) + return 0; + memcpy(c->buf, ptr, arg); + gctx->taglen = arg; + return 1; + + case EVP_CTRL_GCM_GET_TAG: + if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0) + return 0; + memcpy(ptr, c->buf, arg); + return 1; + + case EVP_CTRL_GCM_SET_IV_FIXED: + /* Special case: -1 length restores whole IV */ + if (arg == -1) { + memcpy(gctx->iv, ptr, gctx->ivlen); + gctx->iv_gen = 1; + return 1; + } + /* + * Fixed field must be at least 4 bytes and invocation field at least + * 8. + */ + if ((arg < 4) || (gctx->ivlen - arg) < 8) + return 0; + if (arg) + memcpy(gctx->iv, ptr, arg); + if (c->encrypt && RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0) + return 0; + gctx->iv_gen = 1; + return 1; + + case EVP_CTRL_GCM_IV_GEN: + if (gctx->iv_gen == 0 || gctx->key_set == 0) + return 0; + CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen); + if (arg <= 0 || arg > gctx->ivlen) + arg = gctx->ivlen; + memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg); + /* + * Invocation field will be at least 8 bytes in size and so no need + * to check wrap around or increment more than last 8 bytes. + */ + ctr64_inc(gctx->iv + gctx->ivlen - 8); + gctx->iv_set = 1; + return 1; + + case EVP_CTRL_GCM_SET_IV_INV: + if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt) + return 0; + memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg); + CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen); + gctx->iv_set = 1; + return 1; + + case EVP_CTRL_AEAD_TLS1_AAD: + /* Save the AAD for later use */ + if (arg != EVP_AEAD_TLS1_AAD_LEN) + return 0; + memcpy(c->buf, ptr, arg); + gctx->tls_aad_len = arg; + { + unsigned int len = c->buf[arg - 2] << 8 | c->buf[arg - 1]; + /* Correct length for explicit IV */ + len -= EVP_GCM_TLS_EXPLICIT_IV_LEN; + /* If decrypting correct for tag too */ + if (!c->encrypt) + len -= EVP_GCM_TLS_TAG_LEN; + c->buf[arg - 2] = len >> 8; + c->buf[arg - 1] = len & 0xff; + } + /* Extra padding: tag appended to record */ + return EVP_GCM_TLS_TAG_LEN; + + case EVP_CTRL_COPY: + { + EVP_CIPHER_CTX *out = ptr; + EVP_AES_GCM_CTX *gctx_out = out->cipher_data; + if (gctx->gcm.key) { + if (gctx->gcm.key != &gctx->ks) + return 0; + gctx_out->gcm.key = &gctx_out->ks; + } + if (gctx->iv == c->iv) + gctx_out->iv = out->iv; + else { + gctx_out->iv = OPENSSL_malloc(gctx->ivlen); + if (!gctx_out->iv) + return 0; + memcpy(gctx_out->iv, gctx->iv, gctx->ivlen); + } + return 1; + } + + default: + return -1; + + } +} + +static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc) +{ + EVP_AES_GCM_CTX *gctx = ctx->cipher_data; + if (!iv && !key) + return 1; + if (key) { + do { +# ifdef HWAES_CAPABLE + if (HWAES_CAPABLE) { + HWAES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks); + CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, + (block128_f) HWAES_encrypt); +# ifdef HWAES_ctr32_encrypt_blocks + gctx->ctr = (ctr128_f) HWAES_ctr32_encrypt_blocks; +# else + gctx->ctr = NULL; +# endif + break; + } else +# endif +# ifdef BSAES_CAPABLE + if (BSAES_CAPABLE) { + AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks); + CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, + (block128_f) AES_encrypt); + gctx->ctr = (ctr128_f) bsaes_ctr32_encrypt_blocks; + break; + } else +# endif +# ifdef VPAES_CAPABLE + if (VPAES_CAPABLE) { + vpaes_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks); + CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, + (block128_f) vpaes_encrypt); + gctx->ctr = NULL; + break; + } else +# endif + (void)0; /* terminate potentially open 'else' */ + + AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks); + CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, + (block128_f) AES_encrypt); +# ifdef AES_CTR_ASM + gctx->ctr = (ctr128_f) AES_ctr32_encrypt; +# else + gctx->ctr = NULL; +# endif + } while (0); + + /* + * If we have an iv can set it directly, otherwise use saved IV. + */ + if (iv == NULL && gctx->iv_set) + iv = gctx->iv; + if (iv) { + CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); + gctx->iv_set = 1; + } + gctx->key_set = 1; + } else { + /* If key set use IV, otherwise copy */ + if (gctx->key_set) + CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); + else + memcpy(gctx->iv, iv, gctx->ivlen); + gctx->iv_set = 1; + gctx->iv_gen = 0; + } + return 1; +} + +/* + * Handle TLS GCM packet format. This consists of the last portion of the IV + * followed by the payload and finally the tag. On encrypt generate IV, + * encrypt payload and write the tag. On verify retrieve IV, decrypt payload + * and verify tag. + */ + +static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) +{ + EVP_AES_GCM_CTX *gctx = ctx->cipher_data; + int rv = -1; + /* Encrypt/decrypt must be performed in place */ + if (out != in + || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN)) + return -1; + /* + * Set IV from start of buffer or generate IV and write to start of + * buffer. + */ + if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ? + EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV, + EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0) + goto err; + /* Use saved AAD */ + if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len)) + goto err; + /* Fix buffer and length to point to payload */ + in += EVP_GCM_TLS_EXPLICIT_IV_LEN; + out += EVP_GCM_TLS_EXPLICIT_IV_LEN; + len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; + if (ctx->encrypt) { + /* Encrypt payload */ + if (gctx->ctr) { + size_t bulk = 0; +# if defined(AES_GCM_ASM) + if (len >= 32 && AES_GCM_ASM(gctx)) { + if (CRYPTO_gcm128_encrypt(&gctx->gcm, NULL, NULL, 0)) + return -1; + + bulk = AES_gcm_encrypt(in, out, len, + gctx->gcm.key, + gctx->gcm.Yi.c, gctx->gcm.Xi.u); + gctx->gcm.len.u[1] += bulk; + } +# endif + if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm, + in + bulk, + out + bulk, + len - bulk, gctx->ctr)) + goto err; + } else { + size_t bulk = 0; +# if defined(AES_GCM_ASM2) + if (len >= 32 && AES_GCM_ASM2(gctx)) { + if (CRYPTO_gcm128_encrypt(&gctx->gcm, NULL, NULL, 0)) + return -1; + + bulk = AES_gcm_encrypt(in, out, len, + gctx->gcm.key, + gctx->gcm.Yi.c, gctx->gcm.Xi.u); + gctx->gcm.len.u[1] += bulk; + } +# endif + if (CRYPTO_gcm128_encrypt(&gctx->gcm, + in + bulk, out + bulk, len - bulk)) + goto err; + } + out += len; + /* Finally write tag */ + CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN); + rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; + } else { + /* Decrypt */ + if (gctx->ctr) { + size_t bulk = 0; +# if defined(AES_GCM_ASM) + if (len >= 16 && AES_GCM_ASM(gctx)) { + if (CRYPTO_gcm128_decrypt(&gctx->gcm, NULL, NULL, 0)) + return -1; + + bulk = AES_gcm_decrypt(in, out, len, + gctx->gcm.key, + gctx->gcm.Yi.c, gctx->gcm.Xi.u); + gctx->gcm.len.u[1] += bulk; + } +# endif + if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm, + in + bulk, + out + bulk, + len - bulk, gctx->ctr)) + goto err; + } else { + size_t bulk = 0; +# if defined(AES_GCM_ASM2) + if (len >= 16 && AES_GCM_ASM2(gctx)) { + if (CRYPTO_gcm128_decrypt(&gctx->gcm, NULL, NULL, 0)) + return -1; + + bulk = AES_gcm_decrypt(in, out, len, + gctx->gcm.key, + gctx->gcm.Yi.c, gctx->gcm.Xi.u); + gctx->gcm.len.u[1] += bulk; + } +# endif + if (CRYPTO_gcm128_decrypt(&gctx->gcm, + in + bulk, out + bulk, len - bulk)) + goto err; + } + /* Retrieve tag */ + CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, EVP_GCM_TLS_TAG_LEN); + /* If tag mismatch wipe buffer */ + if (CRYPTO_memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN)) { + OPENSSL_cleanse(out, len); + goto err; + } + rv = len; + } + + err: + gctx->iv_set = 0; + gctx->tls_aad_len = -1; + return rv; +} + +static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) +{ + EVP_AES_GCM_CTX *gctx = ctx->cipher_data; + /* If not set up, return error */ + if (!gctx->key_set) + return -1; + + if (gctx->tls_aad_len >= 0) + return aes_gcm_tls_cipher(ctx, out, in, len); + + if (!gctx->iv_set) + return -1; + if (in) { + if (out == NULL) { + if (CRYPTO_gcm128_aad(&gctx->gcm, in, len)) + return -1; + } else if (ctx->encrypt) { + if (gctx->ctr) { + size_t bulk = 0; +# if defined(AES_GCM_ASM) + if (len >= 32 && AES_GCM_ASM(gctx)) { + size_t res = (16 - gctx->gcm.mres) % 16; + + if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, res)) + return -1; + + bulk = AES_gcm_encrypt(in + res, + out + res, len - res, + gctx->gcm.key, gctx->gcm.Yi.c, + gctx->gcm.Xi.u); + gctx->gcm.len.u[1] += bulk; + bulk += res; + } +# endif + if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm, + in + bulk, + out + bulk, + len - bulk, gctx->ctr)) + return -1; + } else { + size_t bulk = 0; +# if defined(AES_GCM_ASM2) + if (len >= 32 && AES_GCM_ASM2(gctx)) { + size_t res = (16 - gctx->gcm.mres) % 16; + + if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, res)) + return -1; + + bulk = AES_gcm_encrypt(in + res, + out + res, len - res, + gctx->gcm.key, gctx->gcm.Yi.c, + gctx->gcm.Xi.u); + gctx->gcm.len.u[1] += bulk; + bulk += res; + } +# endif + if (CRYPTO_gcm128_encrypt(&gctx->gcm, + in + bulk, out + bulk, len - bulk)) + return -1; + } + } else { + if (gctx->ctr) { + size_t bulk = 0; +# if defined(AES_GCM_ASM) + if (len >= 16 && AES_GCM_ASM(gctx)) { + size_t res = (16 - gctx->gcm.mres) % 16; + + if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, res)) + return -1; + + bulk = AES_gcm_decrypt(in + res, + out + res, len - res, + gctx->gcm.key, + gctx->gcm.Yi.c, gctx->gcm.Xi.u); + gctx->gcm.len.u[1] += bulk; + bulk += res; + } +# endif + if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm, + in + bulk, + out + bulk, + len - bulk, gctx->ctr)) + return -1; + } else { + size_t bulk = 0; +# if defined(AES_GCM_ASM2) + if (len >= 16 && AES_GCM_ASM2(gctx)) { + size_t res = (16 - gctx->gcm.mres) % 16; + + if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, res)) + return -1; + + bulk = AES_gcm_decrypt(in + res, + out + res, len - res, + gctx->gcm.key, + gctx->gcm.Yi.c, gctx->gcm.Xi.u); + gctx->gcm.len.u[1] += bulk; + bulk += res; + } +# endif + if (CRYPTO_gcm128_decrypt(&gctx->gcm, + in + bulk, out + bulk, len - bulk)) + return -1; + } + } + return len; + } else { + if (!ctx->encrypt) { + if (gctx->taglen < 0) + return -1; + if (CRYPTO_gcm128_finish(&gctx->gcm, ctx->buf, gctx->taglen) != 0) + return -1; + gctx->iv_set = 0; + return 0; + } + CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16); + gctx->taglen = 16; + /* Don't reuse the IV */ + gctx->iv_set = 0; + return 0; + } + +} + +# define CUSTOM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \ + | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \ + | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \ + | EVP_CIPH_CUSTOM_COPY) + +BLOCK_CIPHER_custom(NID_aes, 128, 1, 12, gcm, GCM, + EVP_CIPH_FLAG_FIPS | EVP_CIPH_FLAG_AEAD_CIPHER | + CUSTOM_FLAGS) + BLOCK_CIPHER_custom(NID_aes, 192, 1, 12, gcm, GCM, + EVP_CIPH_FLAG_FIPS | EVP_CIPH_FLAG_AEAD_CIPHER | + CUSTOM_FLAGS) + BLOCK_CIPHER_custom(NID_aes, 256, 1, 12, gcm, GCM, + EVP_CIPH_FLAG_FIPS | EVP_CIPH_FLAG_AEAD_CIPHER | + CUSTOM_FLAGS) + +static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) +{ + EVP_AES_XTS_CTX *xctx = c->cipher_data; + if (type == EVP_CTRL_COPY) { + EVP_CIPHER_CTX *out = ptr; + EVP_AES_XTS_CTX *xctx_out = out->cipher_data; + if (xctx->xts.key1) { + if (xctx->xts.key1 != &xctx->ks1) + return 0; + xctx_out->xts.key1 = &xctx_out->ks1; + } + if (xctx->xts.key2) { + if (xctx->xts.key2 != &xctx->ks2) + return 0; + xctx_out->xts.key2 = &xctx_out->ks2; + } + return 1; + } else if (type != EVP_CTRL_INIT) + return -1; + /* key1 and key2 are used as an indicator both key and IV are set */ + xctx->xts.key1 = NULL; + xctx->xts.key2 = NULL; + return 1; +} + +static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc) +{ + EVP_AES_XTS_CTX *xctx = ctx->cipher_data; + if (!iv && !key) + return 1; + + if (key) + do { +# ifdef AES_XTS_ASM + xctx->stream = enc ? AES_xts_encrypt : AES_xts_decrypt; +# else + xctx->stream = NULL; +# endif + /* key_len is two AES keys */ +# ifdef HWAES_CAPABLE + if (HWAES_CAPABLE) { + if (enc) { + HWAES_set_encrypt_key(key, ctx->key_len * 4, + &xctx->ks1.ks); + xctx->xts.block1 = (block128_f) HWAES_encrypt; + } else { + HWAES_set_decrypt_key(key, ctx->key_len * 4, + &xctx->ks1.ks); + xctx->xts.block1 = (block128_f) HWAES_decrypt; + } + + HWAES_set_encrypt_key(key + ctx->key_len / 2, + ctx->key_len * 4, &xctx->ks2.ks); + xctx->xts.block2 = (block128_f) HWAES_encrypt; + + xctx->xts.key1 = &xctx->ks1; + break; + } else +# endif +# ifdef BSAES_CAPABLE + if (BSAES_CAPABLE) + xctx->stream = enc ? bsaes_xts_encrypt : bsaes_xts_decrypt; + else +# endif +# ifdef VPAES_CAPABLE + if (VPAES_CAPABLE) { + if (enc) { + vpaes_set_encrypt_key(key, ctx->key_len * 4, + &xctx->ks1.ks); + xctx->xts.block1 = (block128_f) vpaes_encrypt; + } else { + vpaes_set_decrypt_key(key, ctx->key_len * 4, + &xctx->ks1.ks); + xctx->xts.block1 = (block128_f) vpaes_decrypt; + } + + vpaes_set_encrypt_key(key + ctx->key_len / 2, + ctx->key_len * 4, &xctx->ks2.ks); + xctx->xts.block2 = (block128_f) vpaes_encrypt; + + xctx->xts.key1 = &xctx->ks1; + break; + } else +# endif + (void)0; /* terminate potentially open 'else' */ + + if (enc) { + AES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks); + xctx->xts.block1 = (block128_f) AES_encrypt; + } else { + AES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks); + xctx->xts.block1 = (block128_f) AES_decrypt; + } + + AES_set_encrypt_key(key + ctx->key_len / 2, + ctx->key_len * 4, &xctx->ks2.ks); + xctx->xts.block2 = (block128_f) AES_encrypt; + + xctx->xts.key1 = &xctx->ks1; + } while (0); + + if (iv) { + xctx->xts.key2 = &xctx->ks2; + memcpy(ctx->iv, iv, 16); + } + + return 1; +} + +static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) +{ + EVP_AES_XTS_CTX *xctx = ctx->cipher_data; + if (!xctx->xts.key1 || !xctx->xts.key2) + return 0; + if (!out || !in || len < AES_BLOCK_SIZE) + return 0; + if (xctx->stream) + (*xctx->stream) (in, out, len, + xctx->xts.key1, xctx->xts.key2, ctx->iv); + else if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len, + ctx->encrypt)) + return 0; + return 1; +} + +# define aes_xts_cleanup NULL + +# define XTS_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \ + | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \ + | EVP_CIPH_CUSTOM_COPY) + +BLOCK_CIPHER_custom(NID_aes, 128, 1, 16, xts, XTS, + EVP_CIPH_FLAG_FIPS | XTS_FLAGS) + BLOCK_CIPHER_custom(NID_aes, 256, 1, 16, xts, XTS, + EVP_CIPH_FLAG_FIPS | XTS_FLAGS) + +static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) +{ + EVP_AES_CCM_CTX *cctx = c->cipher_data; + switch (type) { + case EVP_CTRL_INIT: + cctx->key_set = 0; + cctx->iv_set = 0; + cctx->L = 8; + cctx->M = 12; + cctx->tag_set = 0; + cctx->len_set = 0; + return 1; + + case EVP_CTRL_CCM_SET_IVLEN: + arg = 15 - arg; + case EVP_CTRL_CCM_SET_L: + if (arg < 2 || arg > 8) + return 0; + cctx->L = arg; + return 1; + + case EVP_CTRL_CCM_SET_TAG: + if ((arg & 1) || arg < 4 || arg > 16) + return 0; + if (c->encrypt && ptr) + return 0; + if (ptr) { + cctx->tag_set = 1; + memcpy(c->buf, ptr, arg); + } + cctx->M = arg; + return 1; + + case EVP_CTRL_CCM_GET_TAG: + if (!c->encrypt || !cctx->tag_set) + return 0; + if (!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg)) + return 0; + cctx->tag_set = 0; + cctx->iv_set = 0; + cctx->len_set = 0; + return 1; + + case EVP_CTRL_COPY: + { + EVP_CIPHER_CTX *out = ptr; + EVP_AES_CCM_CTX *cctx_out = out->cipher_data; + if (cctx->ccm.key) { + if (cctx->ccm.key != &cctx->ks) + return 0; + cctx_out->ccm.key = &cctx_out->ks; + } + return 1; + } + + default: + return -1; + + } +} + +static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc) +{ + EVP_AES_CCM_CTX *cctx = ctx->cipher_data; + if (!iv && !key) + return 1; + if (key) + do { +# ifdef HWAES_CAPABLE + if (HWAES_CAPABLE) { + HWAES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks.ks); + + CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, + &cctx->ks, (block128_f) HWAES_encrypt); + cctx->str = NULL; + cctx->key_set = 1; + break; + } else +# endif +# ifdef VPAES_CAPABLE + if (VPAES_CAPABLE) { + vpaes_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks.ks); + CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, + &cctx->ks, (block128_f) vpaes_encrypt); + cctx->str = NULL; + cctx->key_set = 1; + break; + } +# endif + AES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks.ks); + CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, + &cctx->ks, (block128_f) AES_encrypt); + cctx->str = NULL; + cctx->key_set = 1; + } while (0); + if (iv) { + memcpy(ctx->iv, iv, 15 - cctx->L); + cctx->iv_set = 1; + } + return 1; +} + +static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) +{ + EVP_AES_CCM_CTX *cctx = ctx->cipher_data; + CCM128_CONTEXT *ccm = &cctx->ccm; + /* If not set up, return error */ + if (!cctx->iv_set && !cctx->key_set) + return -1; + if (!ctx->encrypt && !cctx->tag_set) + return -1; + if (!out) { + if (!in) { + if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len)) + return -1; + cctx->len_set = 1; + return len; + } + /* If have AAD need message length */ + if (!cctx->len_set && len) + return -1; + CRYPTO_ccm128_aad(ccm, in, len); + return len; + } + /* EVP_*Final() doesn't return any data */ + if (!in) + return 0; + /* If not set length yet do it */ + if (!cctx->len_set) { + if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len)) + return -1; + cctx->len_set = 1; + } + if (ctx->encrypt) { + if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len, + cctx->str) : + CRYPTO_ccm128_encrypt(ccm, in, out, len)) + return -1; + cctx->tag_set = 1; + return len; + } else { + int rv = -1; + if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len, + cctx->str) : + !CRYPTO_ccm128_decrypt(ccm, in, out, len)) { + unsigned char tag[16]; + if (CRYPTO_ccm128_tag(ccm, tag, cctx->M)) { + if (!CRYPTO_memcmp(tag, ctx->buf, cctx->M)) + rv = len; + } + } + if (rv == -1) + OPENSSL_cleanse(out, len); + cctx->iv_set = 0; + cctx->tag_set = 0; + cctx->len_set = 0; + return rv; + } + +} + +# define aes_ccm_cleanup NULL + +BLOCK_CIPHER_custom(NID_aes, 128, 1, 12, ccm, CCM, + EVP_CIPH_FLAG_FIPS | CUSTOM_FLAGS) + BLOCK_CIPHER_custom(NID_aes, 192, 1, 12, ccm, CCM, + EVP_CIPH_FLAG_FIPS | CUSTOM_FLAGS) + BLOCK_CIPHER_custom(NID_aes, 256, 1, 12, ccm, CCM, + EVP_CIPH_FLAG_FIPS | CUSTOM_FLAGS) +#endif +typedef struct { + union { + double align; + AES_KEY ks; + } ks; + /* Indicates if IV has been set */ + unsigned char *iv; +} EVP_AES_WRAP_CTX; + +static int aes_wrap_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc) +{ + EVP_AES_WRAP_CTX *wctx = ctx->cipher_data; + if (!iv && !key) + return 1; + if (key) { + if (ctx->encrypt) + AES_set_encrypt_key(key, ctx->key_len * 8, &wctx->ks.ks); + else + AES_set_decrypt_key(key, ctx->key_len * 8, &wctx->ks.ks); + if (!iv) + wctx->iv = NULL; + } + if (iv) { + memcpy(ctx->iv, iv, 8); + wctx->iv = ctx->iv; + } + return 1; +} + +static int aes_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t inlen) +{ + EVP_AES_WRAP_CTX *wctx = ctx->cipher_data; + size_t rv; + if (!in) + return 0; + if (inlen % 8) + return -1; + if (ctx->encrypt && inlen < 8) + return -1; + if (!ctx->encrypt && inlen < 16) + return -1; + if (!out) { + if (ctx->encrypt) + return inlen + 8; + else + return inlen - 8; + } + if (ctx->encrypt) + rv = CRYPTO_128_wrap(&wctx->ks.ks, wctx->iv, out, in, inlen, + (block128_f) AES_encrypt); + else + rv = CRYPTO_128_unwrap(&wctx->ks.ks, wctx->iv, out, in, inlen, + (block128_f) AES_decrypt); + return rv ? (int)rv : -1; +} + +#define WRAP_FLAGS (EVP_CIPH_WRAP_MODE \ + | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \ + | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_FLAG_DEFAULT_ASN1) + +static const EVP_CIPHER aes_128_wrap = { + NID_id_aes128_wrap, + 8, 16, 8, WRAP_FLAGS, + aes_wrap_init_key, aes_wrap_cipher, + NULL, + sizeof(EVP_AES_WRAP_CTX), + NULL, NULL, NULL, NULL +}; + +const EVP_CIPHER *EVP_aes_128_wrap(void) +{ + return &aes_128_wrap; +} + +static const EVP_CIPHER aes_192_wrap = { + NID_id_aes192_wrap, + 8, 24, 8, WRAP_FLAGS, + aes_wrap_init_key, aes_wrap_cipher, + NULL, + sizeof(EVP_AES_WRAP_CTX), + NULL, NULL, NULL, NULL +}; + +const EVP_CIPHER *EVP_aes_192_wrap(void) +{ + return &aes_192_wrap; +} + +static const EVP_CIPHER aes_256_wrap = { + NID_id_aes256_wrap, + 8, 32, 8, WRAP_FLAGS, + aes_wrap_init_key, aes_wrap_cipher, + NULL, + sizeof(EVP_AES_WRAP_CTX), + NULL, NULL, NULL, NULL +}; + +const EVP_CIPHER *EVP_aes_256_wrap(void) +{ + return &aes_256_wrap; +} |