X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=engines%2Fe_ossltest.c;h=1284742ec321ede14d8a451b3a2c98ba6200183b;hp=3c9f08c8ef5e90b063fee2f113a22856ef5fb779;hb=HEAD;hpb=6606d600545b28dbcfb391f3c5adf03dd6ad0ca7 diff --git a/engines/e_ossltest.c b/engines/e_ossltest.c index 3c9f08c8ef..19dda64d1f 100644 --- a/engines/e_ossltest.c +++ b/engines/e_ossltest.c @@ -1,7 +1,7 @@ /* - * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved. + * Copyright 2015-2021 The OpenSSL Project Authors. All Rights Reserved. * - * Licensed under the OpenSSL license (the "License"). You may not use + * Licensed under the Apache License 2.0 (the "License"). You may not use * this file except in compliance with the License. You can obtain a copy * in the file LICENSE in the source distribution or at * https://www.openssl.org/source/license.html @@ -13,8 +13,21 @@ * used for any purpose except testing */ +/* We need to use some engine deprecated APIs */ +#define OPENSSL_SUPPRESS_DEPRECATED + +/* + * SHA low level APIs are deprecated for public use, but still ok for + * internal use. Note, that due to symbols not being exported, only the + * #defines and type definitions can be accessed, function calls are not + * available. The digest lengths, block sizes and sizeof(CTX) are used herein + * for several different digests. + */ +#include "internal/deprecated.h" + #include #include +#include "internal/common.h" /* for CHECK_AND_SKIP_CASE_PREFIX */ #include #include @@ -23,9 +36,11 @@ #include #include #include +#include #include +#include +#include -#define OSSLTEST_LIB_NAME "OSSLTEST" #include "e_ossltest_err.c" /* Engine Id and Name */ @@ -43,6 +58,7 @@ void ENGINE_load_ossltest(void); /* Set up digests */ static int ossltest_digests(ENGINE *e, const EVP_MD **digest, const int **nids, int nid); +static const RAND_METHOD *ossltest_rand_method(void); /* MD5 */ static int digest_md5_init(EVP_MD_CTX *ctx); @@ -133,10 +149,13 @@ static const EVP_MD *digest_sha256(void) /* SHA384/SHA512 */ static int digest_sha384_init(EVP_MD_CTX *ctx); +static int digest_sha384_update(EVP_MD_CTX *ctx, const void *data, + size_t count); +static int digest_sha384_final(EVP_MD_CTX *ctx, unsigned char *md); + static int digest_sha512_init(EVP_MD_CTX *ctx); static int digest_sha512_update(EVP_MD_CTX *ctx, const void *data, size_t count); -static int digest_sha384_final(EVP_MD_CTX *ctx, unsigned char *md); static int digest_sha512_final(EVP_MD_CTX *ctx, unsigned char *md); static EVP_MD *_hidden_sha384_md = NULL; @@ -152,7 +171,7 @@ static const EVP_MD *digest_sha384(void) sizeof(EVP_MD *) + sizeof(SHA512_CTX)) || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_DIGALGID_ABSENT) || !EVP_MD_meth_set_init(md, digest_sha384_init) - || !EVP_MD_meth_set_update(md, digest_sha512_update) + || !EVP_MD_meth_set_update(md, digest_sha384_update) || !EVP_MD_meth_set_final(md, digest_sha384_final)) { EVP_MD_meth_free(md); md = NULL; @@ -205,15 +224,15 @@ static int ossltest_digest_nids(const int **nids) if (!init) { const EVP_MD *md; if ((md = digest_md5()) != NULL) - digest_nids[pos++] = EVP_MD_type(md); + digest_nids[pos++] = EVP_MD_get_type(md); if ((md = digest_sha1()) != NULL) - digest_nids[pos++] = EVP_MD_type(md); + digest_nids[pos++] = EVP_MD_get_type(md); if ((md = digest_sha256()) != NULL) - digest_nids[pos++] = EVP_MD_type(md); + digest_nids[pos++] = EVP_MD_get_type(md); if ((md = digest_sha384()) != NULL) - digest_nids[pos++] = EVP_MD_type(md); + digest_nids[pos++] = EVP_MD_get_type(md); if ((md = digest_sha512()) != NULL) - digest_nids[pos++] = EVP_MD_type(md); + digest_nids[pos++] = EVP_MD_get_type(md); digest_nids[pos] = 0; init = 1; } @@ -226,21 +245,39 @@ static int ossltest_ciphers(ENGINE *, const EVP_CIPHER **, const int **, int); static int ossltest_cipher_nids[] = { - NID_aes_128_cbc, NID_aes_128_gcm, 0 + NID_aes_128_cbc, NID_aes_128_gcm, + NID_aes_128_cbc_hmac_sha1, 0 }; /* AES128 */ -int ossltest_aes128_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, - const unsigned char *iv, int enc); -int ossltest_aes128_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, - const unsigned char *in, size_t inl); -int ossltest_aes128_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, - const unsigned char *iv, int enc); -int ossltest_aes128_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, - const unsigned char *in, size_t inl); +static int ossltest_aes128_init_key(EVP_CIPHER_CTX *ctx, + const unsigned char *key, + const unsigned char *iv, int enc); +static int ossltest_aes128_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t inl); +static int ossltest_aes128_gcm_init_key(EVP_CIPHER_CTX *ctx, + const unsigned char *key, + const unsigned char *iv, int enc); +static int ossltest_aes128_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t inl); static int ossltest_aes128_gcm_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr); +static int ossltest_aes128_cbc_hmac_sha1_init_key(EVP_CIPHER_CTX *ctx, + const unsigned char *key, + const unsigned char *iv, + int enc); +static int ossltest_aes128_cbc_hmac_sha1_cipher(EVP_CIPHER_CTX *ctx, + unsigned char *out, + const unsigned char *in, + size_t inl); +static int ossltest_aes128_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type, + int arg, void *ptr); + +typedef struct { + size_t payload_length; /* AAD length in decrypt case */ + unsigned int tls_ver; +} EVP_AES_HMAC_SHA1; static EVP_CIPHER *_hidden_aes_128_cbc = NULL; static const EVP_CIPHER *ossltest_aes_128_cbc(void) @@ -258,12 +295,13 @@ static const EVP_CIPHER *ossltest_aes_128_cbc(void) || !EVP_CIPHER_meth_set_do_cipher(_hidden_aes_128_cbc, ossltest_aes128_cbc_cipher) || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_aes_128_cbc, - EVP_CIPHER_impl_ctx_size(EVP_aes_128_cbc())))) { + EVP_CIPHER_impl_ctx_size(EVP_aes_128_cbc())))) { EVP_CIPHER_meth_free(_hidden_aes_128_cbc); _hidden_aes_128_cbc = NULL; } return _hidden_aes_128_cbc; } + static EVP_CIPHER *_hidden_aes_128_gcm = NULL; #define AES_GCM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \ @@ -287,20 +325,90 @@ static const EVP_CIPHER *ossltest_aes_128_gcm(void) || !EVP_CIPHER_meth_set_ctrl(_hidden_aes_128_gcm, ossltest_aes128_gcm_ctrl) || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_aes_128_gcm, - EVP_CIPHER_impl_ctx_size(EVP_aes_128_gcm())))) { + EVP_CIPHER_impl_ctx_size(EVP_aes_128_gcm())))) { EVP_CIPHER_meth_free(_hidden_aes_128_gcm); _hidden_aes_128_gcm = NULL; } return _hidden_aes_128_gcm; } +static EVP_CIPHER *_hidden_aes_128_cbc_hmac_sha1 = NULL; + +static const EVP_CIPHER *ossltest_aes_128_cbc_hmac_sha1(void) +{ + if (_hidden_aes_128_cbc_hmac_sha1 == NULL + && ((_hidden_aes_128_cbc_hmac_sha1 + = EVP_CIPHER_meth_new(NID_aes_128_cbc_hmac_sha1, + 16 /* block size */, + 16 /* key len */)) == NULL + || !EVP_CIPHER_meth_set_iv_length(_hidden_aes_128_cbc_hmac_sha1,16) + || !EVP_CIPHER_meth_set_flags(_hidden_aes_128_cbc_hmac_sha1, + EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 | + EVP_CIPH_FLAG_AEAD_CIPHER) + || !EVP_CIPHER_meth_set_init(_hidden_aes_128_cbc_hmac_sha1, + ossltest_aes128_cbc_hmac_sha1_init_key) + || !EVP_CIPHER_meth_set_do_cipher(_hidden_aes_128_cbc_hmac_sha1, + ossltest_aes128_cbc_hmac_sha1_cipher) + || !EVP_CIPHER_meth_set_ctrl(_hidden_aes_128_cbc_hmac_sha1, + ossltest_aes128_cbc_hmac_sha1_ctrl) + || !EVP_CIPHER_meth_set_set_asn1_params(_hidden_aes_128_cbc_hmac_sha1, + EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_set_asn1_iv) + || !EVP_CIPHER_meth_set_get_asn1_params(_hidden_aes_128_cbc_hmac_sha1, + EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_get_asn1_iv) + || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_aes_128_cbc_hmac_sha1, + sizeof(EVP_AES_HMAC_SHA1)))) { + EVP_CIPHER_meth_free(_hidden_aes_128_cbc_hmac_sha1); + _hidden_aes_128_cbc_hmac_sha1 = NULL; + } + return _hidden_aes_128_cbc_hmac_sha1; +} + static void destroy_ciphers(void) { EVP_CIPHER_meth_free(_hidden_aes_128_cbc); EVP_CIPHER_meth_free(_hidden_aes_128_gcm); + EVP_CIPHER_meth_free(_hidden_aes_128_cbc_hmac_sha1); _hidden_aes_128_cbc = NULL; + _hidden_aes_128_gcm = NULL; + _hidden_aes_128_cbc_hmac_sha1 = NULL; +} + +/* Key loading */ +static EVP_PKEY *load_key(ENGINE *eng, const char *key_id, int pub, + UI_METHOD *ui_method, void *ui_data) +{ + BIO *in; + EVP_PKEY *key; + + if (!CHECK_AND_SKIP_CASE_PREFIX(key_id, "ot:")) + return NULL; + + fprintf(stderr, "[ossltest]Loading %s key %s\n", + pub ? "Public" : "Private", key_id); + in = BIO_new_file(key_id, "r"); + if (!in) + return NULL; + if (pub) + key = PEM_read_bio_PUBKEY(in, NULL, 0, NULL); + else + key = PEM_read_bio_PrivateKey(in, NULL, 0, NULL); + BIO_free(in); + return key; +} + +static EVP_PKEY *ossltest_load_privkey(ENGINE *eng, const char *key_id, + UI_METHOD *ui_method, void *ui_data) +{ + return load_key(eng, key_id, 0, ui_method, ui_data); +} + +static EVP_PKEY *ossltest_load_pubkey(ENGINE *eng, const char *key_id, + UI_METHOD *ui_method, void *ui_data) +{ + return load_key(eng, key_id, 1, ui_method, ui_data); } + static int bind_ossltest(ENGINE *e) { /* Ensure the ossltest error handling is set up */ @@ -310,7 +418,10 @@ static int bind_ossltest(ENGINE *e) || !ENGINE_set_name(e, engine_ossltest_name) || !ENGINE_set_digests(e, ossltest_digests) || !ENGINE_set_ciphers(e, ossltest_ciphers) + || !ENGINE_set_RAND(e, ossltest_rand_method()) || !ENGINE_set_destroy_function(e, ossltest_destroy) + || !ENGINE_set_load_privkey_function(e, ossltest_load_privkey) + || !ENGINE_set_load_pubkey_function(e, ossltest_load_pubkey) || !ENGINE_set_init_function(e, ossltest_init) || !ENGINE_set_finish_function(e, ossltest_finish)) { OSSLTESTerr(OSSLTEST_F_BIND_OSSLTEST, OSSLTEST_R_INIT_FAILED); @@ -429,6 +540,9 @@ static int ossltest_ciphers(ENGINE *e, const EVP_CIPHER **cipher, case NID_aes_128_gcm: *cipher = ossltest_aes_128_gcm(); break; + case NID_aes_128_cbc_hmac_sha1: + *cipher = ossltest_aes_128_cbc_hmac_sha1(); + break; default: ok = 0; *cipher = NULL; @@ -452,23 +566,20 @@ static void fill_known_data(unsigned char *md, unsigned int len) * value, so that all "MD5" digests using the test engine always end up with * the same value. */ -#undef data -#define data(ctx) ((MD5_CTX *)EVP_MD_CTX_md_data(ctx)) static int digest_md5_init(EVP_MD_CTX *ctx) { - return MD5_Init(data(ctx)); + return EVP_MD_meth_get_init(EVP_md5())(ctx); } static int digest_md5_update(EVP_MD_CTX *ctx, const void *data, size_t count) { - return MD5_Update(data(ctx), data, (size_t)count); + return EVP_MD_meth_get_update(EVP_md5())(ctx, data, count); } static int digest_md5_final(EVP_MD_CTX *ctx, unsigned char *md) { - int ret; - ret = MD5_Final(md, data(ctx)); + int ret = EVP_MD_meth_get_final(EVP_md5())(ctx, md); if (ret > 0) { fill_known_data(md, MD5_DIGEST_LENGTH); @@ -479,23 +590,20 @@ static int digest_md5_final(EVP_MD_CTX *ctx, unsigned char *md) /* * SHA1 implementation. */ -#undef data -#define data(ctx) ((SHA_CTX *)EVP_MD_CTX_md_data(ctx)) static int digest_sha1_init(EVP_MD_CTX *ctx) { - return SHA1_Init(data(ctx)); + return EVP_MD_meth_get_init(EVP_sha1())(ctx); } static int digest_sha1_update(EVP_MD_CTX *ctx, const void *data, size_t count) { - return SHA1_Update(data(ctx), data, (size_t)count); + return EVP_MD_meth_get_update(EVP_sha1())(ctx, data, count); } static int digest_sha1_final(EVP_MD_CTX *ctx, unsigned char *md) { - int ret; - ret = SHA1_Final(md, data(ctx)); + int ret = EVP_MD_meth_get_final(EVP_sha1())(ctx, md); if (ret > 0) { fill_known_data(md, SHA_DIGEST_LENGTH); @@ -506,23 +614,20 @@ static int digest_sha1_final(EVP_MD_CTX *ctx, unsigned char *md) /* * SHA256 implementation. */ -#undef data -#define data(ctx) ((SHA256_CTX *)EVP_MD_CTX_md_data(ctx)) static int digest_sha256_init(EVP_MD_CTX *ctx) { - return SHA256_Init(data(ctx)); + return EVP_MD_meth_get_init(EVP_sha256())(ctx); } static int digest_sha256_update(EVP_MD_CTX *ctx, const void *data, size_t count) { - return SHA256_Update(data(ctx), data, (size_t)count); + return EVP_MD_meth_get_update(EVP_sha256())(ctx, data, count); } static int digest_sha256_final(EVP_MD_CTX *ctx, unsigned char *md) { - int ret; - ret = SHA256_Final(md, data(ctx)); + int ret = EVP_MD_meth_get_final(EVP_sha256())(ctx, md); if (ret > 0) { fill_known_data(md, SHA256_DIGEST_LENGTH); @@ -531,31 +636,22 @@ static int digest_sha256_final(EVP_MD_CTX *ctx, unsigned char *md) } /* - * SHA384/512 implementation. + * SHA384 implementation. */ -#undef data -#define data(ctx) ((SHA512_CTX *)EVP_MD_CTX_md_data(ctx)) static int digest_sha384_init(EVP_MD_CTX *ctx) { - return SHA384_Init(data(ctx)); + return EVP_MD_meth_get_init(EVP_sha384())(ctx); } -static int digest_sha512_init(EVP_MD_CTX *ctx) -{ - return SHA512_Init(data(ctx)); -} - -static int digest_sha512_update(EVP_MD_CTX *ctx, const void *data, +static int digest_sha384_update(EVP_MD_CTX *ctx, const void *data, size_t count) { - return SHA512_Update(data(ctx), data, (size_t)count); + return EVP_MD_meth_get_update(EVP_sha384())(ctx, data, count); } static int digest_sha384_final(EVP_MD_CTX *ctx, unsigned char *md) { - int ret; - /* Actually uses SHA512_Final! */ - ret = SHA512_Final(md, data(ctx)); + int ret = EVP_MD_meth_get_final(EVP_sha384())(ctx, md); if (ret > 0) { fill_known_data(md, SHA384_DIGEST_LENGTH); @@ -563,10 +659,23 @@ static int digest_sha384_final(EVP_MD_CTX *ctx, unsigned char *md) return ret; } +/* + * SHA512 implementation. + */ +static int digest_sha512_init(EVP_MD_CTX *ctx) +{ + return EVP_MD_meth_get_init(EVP_sha512())(ctx); +} + +static int digest_sha512_update(EVP_MD_CTX *ctx, const void *data, + size_t count) +{ + return EVP_MD_meth_get_update(EVP_sha512())(ctx, data, count); +} + static int digest_sha512_final(EVP_MD_CTX *ctx, unsigned char *md) { - int ret; - ret = SHA512_Final(md, data(ctx)); + int ret = EVP_MD_meth_get_final(EVP_sha512())(ctx, md); if (ret > 0) { fill_known_data(md, SHA512_DIGEST_LENGTH); @@ -578,44 +687,49 @@ static int digest_sha512_final(EVP_MD_CTX *ctx, unsigned char *md) * AES128 Implementation */ -int ossltest_aes128_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, - const unsigned char *iv, int enc) +static int ossltest_aes128_init_key(EVP_CIPHER_CTX *ctx, + const unsigned char *key, + const unsigned char *iv, int enc) { return EVP_CIPHER_meth_get_init(EVP_aes_128_cbc()) (ctx, key, iv, enc); } -int ossltest_aes128_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, - const unsigned char *in, size_t inl) +static int ossltest_aes128_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t inl) { unsigned char *tmpbuf; int ret; tmpbuf = OPENSSL_malloc(inl); - if (tmpbuf == NULL) + + /* OPENSSL_malloc will return NULL if inl == 0 */ + if (tmpbuf == NULL && inl > 0) return -1; /* Remember what we were asked to encrypt */ - memcpy(tmpbuf, in, inl); + if (tmpbuf != NULL) + memcpy(tmpbuf, in, inl); /* Go through the motions of encrypting it */ ret = EVP_CIPHER_meth_get_do_cipher(EVP_aes_128_cbc())(ctx, out, in, inl); /* Throw it all away and just use the plaintext as the output */ - memcpy(out, tmpbuf, inl); + if (tmpbuf != NULL) + memcpy(out, tmpbuf, inl); OPENSSL_free(tmpbuf); return ret; } -int ossltest_aes128_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, - const unsigned char *iv, int enc) +static int ossltest_aes128_gcm_init_key(EVP_CIPHER_CTX *ctx, + const unsigned char *key, + const unsigned char *iv, int enc) { return EVP_CIPHER_meth_get_init(EVP_aes_128_gcm()) (ctx, key, iv, enc); } - -int ossltest_aes128_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, - const unsigned char *in, size_t inl) +static int ossltest_aes128_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t inl) { unsigned char *tmpbuf = OPENSSL_malloc(inl); @@ -624,13 +738,15 @@ int ossltest_aes128_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, return -1; /* Remember what we were asked to encrypt */ - memcpy(tmpbuf, in, inl); + if (tmpbuf != NULL) + memcpy(tmpbuf, in, inl); /* Go through the motions of encrypting it */ EVP_CIPHER_meth_get_do_cipher(EVP_aes_128_gcm())(ctx, out, in, inl); /* Throw it all away and just use the plaintext as the output */ - memcpy(out, tmpbuf, inl); + if (tmpbuf != NULL && out != NULL) + memcpy(out, tmpbuf, inl); OPENSSL_free(tmpbuf); return inl; @@ -645,7 +761,7 @@ static int ossltest_aes128_gcm_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, if (ret <= 0) return ret; - switch(type) { + switch (type) { case EVP_CTRL_AEAD_GET_TAG: /* Always give the same tag */ memset(ptr, 0, EVP_GCM_TLS_TAG_LEN); @@ -657,3 +773,154 @@ static int ossltest_aes128_gcm_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, return 1; } + +#define NO_PAYLOAD_LENGTH ((size_t)-1) +# define data(ctx) ((EVP_AES_HMAC_SHA1 *)EVP_CIPHER_CTX_get_cipher_data(ctx)) + +static int ossltest_aes128_cbc_hmac_sha1_init_key(EVP_CIPHER_CTX *ctx, + const unsigned char *inkey, + const unsigned char *iv, + int enc) +{ + EVP_AES_HMAC_SHA1 *key = data(ctx); + key->payload_length = NO_PAYLOAD_LENGTH; + return 1; +} + +static int ossltest_aes128_cbc_hmac_sha1_cipher(EVP_CIPHER_CTX *ctx, + unsigned char *out, + const unsigned char *in, + size_t len) +{ + EVP_AES_HMAC_SHA1 *key = data(ctx); + unsigned int l; + size_t plen = key->payload_length; + + key->payload_length = NO_PAYLOAD_LENGTH; + + if (len % AES_BLOCK_SIZE) + return 0; + + if (EVP_CIPHER_CTX_is_encrypting(ctx)) { + if (plen == NO_PAYLOAD_LENGTH) + plen = len; + else if (len != + ((plen + SHA_DIGEST_LENGTH + + AES_BLOCK_SIZE) & -AES_BLOCK_SIZE)) + return 0; + + memmove(out, in, plen); + + if (plen != len) { /* "TLS" mode of operation */ + /* calculate HMAC and append it to payload */ + fill_known_data(out + plen, SHA_DIGEST_LENGTH); + + /* pad the payload|hmac */ + plen += SHA_DIGEST_LENGTH; + for (l = len - plen - 1; plen < len; plen++) + out[plen] = l; + } + } else { + /* decrypt HMAC|padding at once */ + memmove(out, in, len); + + if (plen != NO_PAYLOAD_LENGTH) { /* "TLS" mode of operation */ + unsigned int maxpad, pad; + + if (key->tls_ver >= TLS1_1_VERSION) { + if (len < (AES_BLOCK_SIZE + SHA_DIGEST_LENGTH + 1)) + return 0; + + /* omit explicit iv */ + in += AES_BLOCK_SIZE; + out += AES_BLOCK_SIZE; + len -= AES_BLOCK_SIZE; + } else if (len < (SHA_DIGEST_LENGTH + 1)) + return 0; + + /* figure out payload length */ + pad = out[len - 1]; + maxpad = len - (SHA_DIGEST_LENGTH + 1); + if (pad > maxpad) + return 0; + for (plen = len - pad - 1; plen < len; plen++) + if (out[plen] != pad) + return 0; + } + } + + return 1; +} + +static int ossltest_aes128_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type, + int arg, void *ptr) +{ + EVP_AES_HMAC_SHA1 *key = data(ctx); + + switch (type) { + case EVP_CTRL_AEAD_SET_MAC_KEY: + return 1; + + case EVP_CTRL_AEAD_TLS1_AAD: + { + unsigned char *p = ptr; + unsigned int len; + + if (arg != EVP_AEAD_TLS1_AAD_LEN) + return -1; + + len = p[arg - 2] << 8 | p[arg - 1]; + key->tls_ver = p[arg - 4] << 8 | p[arg - 3]; + + if (EVP_CIPHER_CTX_is_encrypting(ctx)) { + key->payload_length = len; + if (key->tls_ver >= TLS1_1_VERSION) { + if (len < AES_BLOCK_SIZE) + return 0; + len -= AES_BLOCK_SIZE; + p[arg - 2] = len >> 8; + p[arg - 1] = len; + } + + return (int)(((len + SHA_DIGEST_LENGTH + + AES_BLOCK_SIZE) & -AES_BLOCK_SIZE) + - len); + } else { + key->payload_length = arg; + + return SHA_DIGEST_LENGTH; + } + } + default: + return -1; + } +} + +static int ossltest_rand_bytes(unsigned char *buf, int num) +{ + unsigned char val = 1; + + while (--num >= 0) + *buf++ = val++; + return 1; +} + +static int ossltest_rand_status(void) +{ + return 1; +} + +static const RAND_METHOD *ossltest_rand_method(void) +{ + + static RAND_METHOD osslt_rand_meth = { + NULL, + ossltest_rand_bytes, + NULL, + NULL, + ossltest_rand_bytes, + ossltest_rand_status + }; + + return &osslt_rand_meth; +}