diff options
Diffstat (limited to 'crypto/evp/evp_lib.c')
| -rw-r--r-- | crypto/evp/evp_lib.c | 883 |
1 files changed, 782 insertions, 101 deletions
diff --git a/crypto/evp/evp_lib.c b/crypto/evp/evp_lib.c index 45cde0da8bfc..4f3d901eba5d 100644 --- a/crypto/evp/evp_lib.c +++ b/crypto/evp/evp_lib.c @@ -1,34 +1,118 @@ /* - * Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved. + * Copyright 1995-2023 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 */ +/* + * EVP _meth_ APIs are deprecated for public use, but still ok for + * internal use. + */ +#include "internal/deprecated.h" + #include <stdio.h> +#include <string.h> #include "internal/cryptlib.h" #include <openssl/evp.h> #include <openssl/objects.h> +#include <openssl/params.h> +#include <openssl/core_names.h> +#include <openssl/rsa.h> +#include <openssl/dh.h> +#include <openssl/ec.h> #include "crypto/evp.h" +#include "crypto/cryptlib.h" +#include "internal/provider.h" #include "evp_local.h" +#if !defined(FIPS_MODULE) +# include "crypto/asn1.h" + int EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX *c, ASN1_TYPE *type) { - int ret; + return evp_cipher_param_to_asn1_ex(c, type, NULL); +} + +int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX *c, ASN1_TYPE *type) +{ + return evp_cipher_asn1_to_param_ex(c, type, NULL); +} + +int EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX *ctx, ASN1_TYPE *type) +{ + int i = 0; + unsigned int l; + + if (type != NULL) { + unsigned char iv[EVP_MAX_IV_LENGTH]; + + l = EVP_CIPHER_CTX_get_iv_length(ctx); + if (!ossl_assert(l <= sizeof(iv))) + return -1; + i = ASN1_TYPE_get_octetstring(type, iv, l); + if (i != (int)l) + return -1; + + if (!EVP_CipherInit_ex(ctx, NULL, NULL, NULL, iv, -1)) + return -1; + } + return i; +} + +int EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type) +{ + int i = 0; + unsigned int j; + unsigned char *oiv = NULL; - if (c->cipher->set_asn1_parameters != NULL) - ret = c->cipher->set_asn1_parameters(c, type); - else if (c->cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1) { - switch (EVP_CIPHER_CTX_mode(c)) { + if (type != NULL) { + oiv = (unsigned char *)EVP_CIPHER_CTX_original_iv(c); + j = EVP_CIPHER_CTX_get_iv_length(c); + OPENSSL_assert(j <= sizeof(c->iv)); + i = ASN1_TYPE_set_octetstring(type, oiv, j); + } + return i; +} + +int evp_cipher_param_to_asn1_ex(EVP_CIPHER_CTX *c, ASN1_TYPE *type, + evp_cipher_aead_asn1_params *asn1_params) +{ + int ret = -1; /* Assume the worst */ + const EVP_CIPHER *cipher = c->cipher; + + /* + * For legacy implementations, we detect custom AlgorithmIdentifier + * parameter handling by checking if the function pointer + * cipher->set_asn1_parameters is set. We know that this pointer + * is NULL for provided implementations. + * + * Otherwise, for any implementation, we check the flag + * EVP_CIPH_FLAG_CUSTOM_ASN1. If it isn't set, we apply + * default AI parameter extraction. + * + * Otherwise, for provided implementations, we convert |type| to + * a DER encoded blob and pass to the implementation in OSSL_PARAM + * form. + * + * If none of the above applies, this operation is unsupported. + */ + if (cipher->set_asn1_parameters != NULL) { + ret = cipher->set_asn1_parameters(c, type); + } else if ((EVP_CIPHER_get_flags(cipher) & EVP_CIPH_FLAG_CUSTOM_ASN1) == 0) { + switch (EVP_CIPHER_get_mode(cipher)) { case EVP_CIPH_WRAP_MODE: - if (EVP_CIPHER_CTX_nid(c) == NID_id_smime_alg_CMS3DESwrap) + if (EVP_CIPHER_is_a(cipher, SN_id_smime_alg_CMS3DESwrap)) ASN1_TYPE_set(type, V_ASN1_NULL, NULL); ret = 1; break; case EVP_CIPH_GCM_MODE: + ret = evp_cipher_set_asn1_aead_params(c, type, asn1_params); + break; + case EVP_CIPH_CCM_MODE: case EVP_CIPH_XTS_MODE: case EVP_CIPH_OCB_MODE: @@ -38,31 +122,86 @@ int EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX *c, ASN1_TYPE *type) default: ret = EVP_CIPHER_set_asn1_iv(c, type); } - } else - ret = -1; - if (ret <= 0) - EVPerr(EVP_F_EVP_CIPHER_PARAM_TO_ASN1, ret == -2 ? - ASN1_R_UNSUPPORTED_CIPHER : - EVP_R_CIPHER_PARAMETER_ERROR); + } else if (cipher->prov != NULL) { + OSSL_PARAM params[3], *p = params; + unsigned char *der = NULL, *derp; + + /* + * We make two passes, the first to get the appropriate buffer size, + * and the second to get the actual value. + */ + *p++ = OSSL_PARAM_construct_octet_string( + OSSL_CIPHER_PARAM_ALGORITHM_ID_PARAMS, + NULL, 0); + *p = OSSL_PARAM_construct_end(); + + if (!EVP_CIPHER_CTX_get_params(c, params)) + goto err; + + /* ... but, we should get a return size too! */ + if (OSSL_PARAM_modified(params) + && params[0].return_size != 0 + && (der = OPENSSL_malloc(params[0].return_size)) != NULL) { + params[0].data = der; + params[0].data_size = params[0].return_size; + OSSL_PARAM_set_all_unmodified(params); + derp = der; + if (EVP_CIPHER_CTX_get_params(c, params) + && OSSL_PARAM_modified(params) + && d2i_ASN1_TYPE(&type, (const unsigned char **)&derp, + params[0].return_size) != NULL) { + ret = 1; + } + OPENSSL_free(der); + } + } else { + ret = -2; + } + + err: + if (ret == -2) + ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_CIPHER); + else if (ret <= 0) + ERR_raise(ERR_LIB_EVP, EVP_R_CIPHER_PARAMETER_ERROR); if (ret < -1) ret = -1; return ret; } -int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX *c, ASN1_TYPE *type) +int evp_cipher_asn1_to_param_ex(EVP_CIPHER_CTX *c, ASN1_TYPE *type, + evp_cipher_aead_asn1_params *asn1_params) { - int ret; - - if (c->cipher->get_asn1_parameters != NULL) - ret = c->cipher->get_asn1_parameters(c, type); - else if (c->cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1) { - switch (EVP_CIPHER_CTX_mode(c)) { + int ret = -1; /* Assume the worst */ + const EVP_CIPHER *cipher = c->cipher; + /* + * For legacy implementations, we detect custom AlgorithmIdentifier + * parameter handling by checking if there the function pointer + * cipher->get_asn1_parameters is set. We know that this pointer + * is NULL for provided implementations. + * + * Otherwise, for any implementation, we check the flag + * EVP_CIPH_FLAG_CUSTOM_ASN1. If it isn't set, we apply + * default AI parameter creation. + * + * Otherwise, for provided implementations, we get the AI parameter + * in DER encoded form from the implementation by requesting the + * appropriate OSSL_PARAM and converting the result to a ASN1_TYPE. + * + * If none of the above applies, this operation is unsupported. + */ + if (cipher->get_asn1_parameters != NULL) { + ret = cipher->get_asn1_parameters(c, type); + } else if ((EVP_CIPHER_get_flags(cipher) & EVP_CIPH_FLAG_CUSTOM_ASN1) == 0) { + switch (EVP_CIPHER_get_mode(cipher)) { case EVP_CIPH_WRAP_MODE: ret = 1; break; case EVP_CIPH_GCM_MODE: + ret = evp_cipher_get_asn1_aead_params(c, type, asn1_params); + break; + case EVP_CIPH_CCM_MODE: case EVP_CIPH_XTS_MODE: case EVP_CIPH_OCB_MODE: @@ -70,56 +209,74 @@ int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX *c, ASN1_TYPE *type) break; default: - ret = EVP_CIPHER_get_asn1_iv(c, type); - break; + ret = EVP_CIPHER_get_asn1_iv(c, type) >= 0 ? 1 : -1; } - } else - ret = -1; - if (ret <= 0) - EVPerr(EVP_F_EVP_CIPHER_ASN1_TO_PARAM, ret == -2 ? - EVP_R_UNSUPPORTED_CIPHER : - EVP_R_CIPHER_PARAMETER_ERROR); + } else if (cipher->prov != NULL) { + OSSL_PARAM params[3], *p = params; + unsigned char *der = NULL; + int derl = -1; + + if ((derl = i2d_ASN1_TYPE(type, &der)) >= 0) { + *p++ = + OSSL_PARAM_construct_octet_string( + OSSL_CIPHER_PARAM_ALGORITHM_ID_PARAMS, + der, (size_t)derl); + *p = OSSL_PARAM_construct_end(); + if (EVP_CIPHER_CTX_set_params(c, params)) + ret = 1; + OPENSSL_free(der); + } + } else { + ret = -2; + } + + if (ret == -2) + ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_CIPHER); + else if (ret <= 0) + ERR_raise(ERR_LIB_EVP, EVP_R_CIPHER_PARAMETER_ERROR); if (ret < -1) ret = -1; return ret; } -int EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type) +int evp_cipher_get_asn1_aead_params(EVP_CIPHER_CTX *c, ASN1_TYPE *type, + evp_cipher_aead_asn1_params *asn1_params) { int i = 0; - unsigned int l; + long tl; + unsigned char iv[EVP_MAX_IV_LENGTH]; + + if (type == NULL || asn1_params == NULL) + return 0; + + i = ossl_asn1_type_get_octetstring_int(type, &tl, NULL, EVP_MAX_IV_LENGTH); + if (i <= 0) + return -1; + ossl_asn1_type_get_octetstring_int(type, &tl, iv, i); + + memcpy(asn1_params->iv, iv, i); + asn1_params->iv_len = i; - if (type != NULL) { - l = EVP_CIPHER_CTX_iv_length(c); - OPENSSL_assert(l <= sizeof(c->iv)); - i = ASN1_TYPE_get_octetstring(type, c->oiv, l); - if (i != (int)l) - return -1; - else if (i > 0) - memcpy(c->iv, c->oiv, l); - } return i; } -int EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type) +int evp_cipher_set_asn1_aead_params(EVP_CIPHER_CTX *c, ASN1_TYPE *type, + evp_cipher_aead_asn1_params *asn1_params) { - int i = 0; - unsigned int j; + if (type == NULL || asn1_params == NULL) + return 0; - if (type != NULL) { - j = EVP_CIPHER_CTX_iv_length(c); - OPENSSL_assert(j <= sizeof(c->iv)); - i = ASN1_TYPE_set_octetstring(type, c->oiv, j); - } - return i; + return ossl_asn1_type_set_octetstring_int(type, asn1_params->tag_len, + asn1_params->iv, + asn1_params->iv_len); } +#endif /* !defined(FIPS_MODULE) */ /* Convert the various cipher NIDs and dummies to a proper OID NID */ -int EVP_CIPHER_type(const EVP_CIPHER *ctx) +int EVP_CIPHER_get_type(const EVP_CIPHER *cipher) { int nid; - ASN1_OBJECT *otmp; - nid = EVP_CIPHER_nid(ctx); + nid = EVP_CIPHER_get_nid(cipher); switch (nid) { @@ -165,23 +322,77 @@ int EVP_CIPHER_type(const EVP_CIPHER *ctx) return NID_des_cfb64; default: - /* Check it has an OID and it is valid */ - otmp = OBJ_nid2obj(nid); - if (OBJ_get0_data(otmp) == NULL) - nid = NID_undef; - ASN1_OBJECT_free(otmp); - return nid; +#ifdef FIPS_MODULE + return NID_undef; +#else + { + /* Check it has an OID and it is valid */ + ASN1_OBJECT *otmp = OBJ_nid2obj(nid); + + if (OBJ_get0_data(otmp) == NULL) + nid = NID_undef; + ASN1_OBJECT_free(otmp); + return nid; + } +#endif + } +} + +int evp_cipher_cache_constants(EVP_CIPHER *cipher) +{ + int ok, aead = 0, custom_iv = 0, cts = 0, multiblock = 0, randkey = 0; + size_t ivlen = 0; + size_t blksz = 0; + size_t keylen = 0; + unsigned int mode = 0; + OSSL_PARAM params[10]; + + params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_BLOCK_SIZE, &blksz); + params[1] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN, &ivlen); + params[2] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN, &keylen); + params[3] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_MODE, &mode); + params[4] = OSSL_PARAM_construct_int(OSSL_CIPHER_PARAM_AEAD, &aead); + params[5] = OSSL_PARAM_construct_int(OSSL_CIPHER_PARAM_CUSTOM_IV, + &custom_iv); + params[6] = OSSL_PARAM_construct_int(OSSL_CIPHER_PARAM_CTS, &cts); + params[7] = OSSL_PARAM_construct_int(OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK, + &multiblock); + params[8] = OSSL_PARAM_construct_int(OSSL_CIPHER_PARAM_HAS_RAND_KEY, + &randkey); + params[9] = OSSL_PARAM_construct_end(); + ok = evp_do_ciph_getparams(cipher, params) > 0; + if (ok) { + cipher->block_size = blksz; + cipher->iv_len = ivlen; + cipher->key_len = keylen; + cipher->flags = mode; + if (aead) + cipher->flags |= EVP_CIPH_FLAG_AEAD_CIPHER; + if (custom_iv) + cipher->flags |= EVP_CIPH_CUSTOM_IV; + if (cts) + cipher->flags |= EVP_CIPH_FLAG_CTS; + if (multiblock) + cipher->flags |= EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK; + if (cipher->ccipher != NULL) + cipher->flags |= EVP_CIPH_FLAG_CUSTOM_CIPHER; + if (randkey) + cipher->flags |= EVP_CIPH_RAND_KEY; + if (OSSL_PARAM_locate_const(EVP_CIPHER_gettable_ctx_params(cipher), + OSSL_CIPHER_PARAM_ALGORITHM_ID_PARAMS)) + cipher->flags |= EVP_CIPH_FLAG_CUSTOM_ASN1; } + return ok; } -int EVP_CIPHER_block_size(const EVP_CIPHER *e) +int EVP_CIPHER_get_block_size(const EVP_CIPHER *cipher) { - return e->block_size; + return cipher->block_size; } -int EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx) +int EVP_CIPHER_CTX_get_block_size(const EVP_CIPHER_CTX *ctx) { - return ctx->cipher->block_size; + return EVP_CIPHER_get_block_size(ctx->cipher); } int EVP_CIPHER_impl_ctx_size(const EVP_CIPHER *e) @@ -192,20 +403,71 @@ int EVP_CIPHER_impl_ctx_size(const EVP_CIPHER *e) int EVP_Cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) { + if (ctx->cipher->prov != NULL) { + /* + * If the provided implementation has a ccipher function, we use it, + * and translate its return value like this: 0 => -1, 1 => outlen + * + * Otherwise, we call the cupdate function if in != NULL, or cfinal + * if in == NULL. Regardless of which, we return what we got. + */ + int ret = -1; + size_t outl = 0; + size_t blocksize = EVP_CIPHER_CTX_get_block_size(ctx); + + if (ctx->cipher->ccipher != NULL) + ret = ctx->cipher->ccipher(ctx->algctx, out, &outl, + inl + (blocksize == 1 ? 0 : blocksize), + in, (size_t)inl) + ? (int)outl : -1; + else if (in != NULL) + ret = ctx->cipher->cupdate(ctx->algctx, out, &outl, + inl + (blocksize == 1 ? 0 : blocksize), + in, (size_t)inl); + else + ret = ctx->cipher->cfinal(ctx->algctx, out, &outl, + blocksize == 1 ? 0 : blocksize); + + return ret; + } + return ctx->cipher->do_cipher(ctx, out, in, inl); } +#ifndef OPENSSL_NO_DEPRECATED_3_0 const EVP_CIPHER *EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX *ctx) { + if (ctx == NULL) + return NULL; return ctx->cipher; } +#endif + +const EVP_CIPHER *EVP_CIPHER_CTX_get0_cipher(const EVP_CIPHER_CTX *ctx) +{ + if (ctx == NULL) + return NULL; + return ctx->cipher; +} + +EVP_CIPHER *EVP_CIPHER_CTX_get1_cipher(EVP_CIPHER_CTX *ctx) +{ + EVP_CIPHER *cipher; + + if (ctx == NULL) + return NULL; + cipher = (EVP_CIPHER *)ctx->cipher; + if (!EVP_CIPHER_up_ref(cipher)) + return NULL; + return cipher; +} -int EVP_CIPHER_CTX_encrypting(const EVP_CIPHER_CTX *ctx) +int EVP_CIPHER_CTX_is_encrypting(const EVP_CIPHER_CTX *ctx) { return ctx->encrypt; } -unsigned long EVP_CIPHER_flags(const EVP_CIPHER *cipher) +unsigned long EVP_CIPHER_get_flags(const EVP_CIPHER *cipher) { return cipher->flags; } @@ -235,36 +497,121 @@ void *EVP_CIPHER_CTX_set_cipher_data(EVP_CIPHER_CTX *ctx, void *cipher_data) return old_cipher_data; } -int EVP_CIPHER_iv_length(const EVP_CIPHER *cipher) +int EVP_CIPHER_get_iv_length(const EVP_CIPHER *cipher) { return cipher->iv_len; } -int EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx) +int EVP_CIPHER_CTX_get_iv_length(const EVP_CIPHER_CTX *ctx) +{ + if (ctx->iv_len < 0) { + int rv, len = EVP_CIPHER_get_iv_length(ctx->cipher); + size_t v = len; + OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END }; + + if (ctx->cipher->get_ctx_params != NULL) { + params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN, + &v); + rv = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params); + if (rv > 0) { + if (OSSL_PARAM_modified(params) + && !OSSL_PARAM_get_int(params, &len)) + return -1; + } else if (rv != EVP_CTRL_RET_UNSUPPORTED) { + return -1; + } + } + /* Code below to be removed when legacy support is dropped. */ + else if ((EVP_CIPHER_get_flags(ctx->cipher) + & EVP_CIPH_CUSTOM_IV_LENGTH) != 0) { + rv = EVP_CIPHER_CTX_ctrl((EVP_CIPHER_CTX *)ctx, EVP_CTRL_GET_IVLEN, + 0, &len); + if (rv <= 0) + return -1; + } + /*- + * Casting away the const is annoying but required here. We need to + * cache the result for performance reasons. + */ + ((EVP_CIPHER_CTX *)ctx)->iv_len = len; + } + return ctx->iv_len; +} + +int EVP_CIPHER_CTX_get_tag_length(const EVP_CIPHER_CTX *ctx) { - int i, rv; + int ret; + size_t v = 0; + OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END }; - if ((EVP_CIPHER_flags(ctx->cipher) & EVP_CIPH_CUSTOM_IV_LENGTH) != 0) { - rv = EVP_CIPHER_CTX_ctrl((EVP_CIPHER_CTX *)ctx, EVP_CTRL_GET_IVLEN, - 0, &i); - return (rv == 1) ? i : -1; - } - return ctx->cipher->iv_len; + params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_AEAD_TAGLEN, &v); + ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params); + return ret == 1 ? (int)v : 0; } +#ifndef OPENSSL_NO_DEPRECATED_3_0 const unsigned char *EVP_CIPHER_CTX_original_iv(const EVP_CIPHER_CTX *ctx) { - return ctx->oiv; + int ok; + const unsigned char *v = ctx->oiv; + OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END }; + + params[0] = + OSSL_PARAM_construct_octet_ptr(OSSL_CIPHER_PARAM_IV, + (void **)&v, sizeof(ctx->oiv)); + ok = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params); + + return ok != 0 ? v : NULL; } +/* + * OSSL_PARAM_OCTET_PTR gets us the pointer to the running IV in the provider + */ const unsigned char *EVP_CIPHER_CTX_iv(const EVP_CIPHER_CTX *ctx) { - return ctx->iv; + int ok; + const unsigned char *v = ctx->iv; + OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END }; + + params[0] = + OSSL_PARAM_construct_octet_ptr(OSSL_CIPHER_PARAM_UPDATED_IV, + (void **)&v, sizeof(ctx->iv)); + ok = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params); + + return ok != 0 ? v : NULL; } unsigned char *EVP_CIPHER_CTX_iv_noconst(EVP_CIPHER_CTX *ctx) { - return ctx->iv; + int ok; + unsigned char *v = ctx->iv; + OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END }; + + params[0] = + OSSL_PARAM_construct_octet_ptr(OSSL_CIPHER_PARAM_UPDATED_IV, + (void **)&v, sizeof(ctx->iv)); + ok = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params); + + return ok != 0 ? v : NULL; +} +#endif /* OPENSSL_NO_DEPRECATED_3_0_0 */ + +int EVP_CIPHER_CTX_get_updated_iv(EVP_CIPHER_CTX *ctx, void *buf, size_t len) +{ + OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END }; + + params[0] = + OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_UPDATED_IV, buf, len); + return evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params) > 0; +} + +int EVP_CIPHER_CTX_get_original_iv(EVP_CIPHER_CTX *ctx, void *buf, size_t len) +{ + OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END }; + + params[0] = + OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_IV, buf, len); + return evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params) > 0; } unsigned char *EVP_CIPHER_CTX_buf_noconst(EVP_CIPHER_CTX *ctx) @@ -272,109 +619,287 @@ unsigned char *EVP_CIPHER_CTX_buf_noconst(EVP_CIPHER_CTX *ctx) return ctx->buf; } -int EVP_CIPHER_CTX_num(const EVP_CIPHER_CTX *ctx) +int EVP_CIPHER_CTX_get_num(const EVP_CIPHER_CTX *ctx) { - return ctx->num; + int ok; + unsigned int v = (unsigned int)ctx->num; + OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END }; + + params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_NUM, &v); + ok = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params); + + return ok != 0 ? (int)v : EVP_CTRL_RET_UNSUPPORTED; } -void EVP_CIPHER_CTX_set_num(EVP_CIPHER_CTX *ctx, int num) +int EVP_CIPHER_CTX_set_num(EVP_CIPHER_CTX *ctx, int num) { - ctx->num = num; + int ok; + unsigned int n = (unsigned int)num; + OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END }; + + params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_NUM, &n); + ok = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->algctx, params); + + if (ok != 0) + ctx->num = (int)n; + return ok != 0; } -int EVP_CIPHER_key_length(const EVP_CIPHER *cipher) +int EVP_CIPHER_get_key_length(const EVP_CIPHER *cipher) { return cipher->key_len; } -int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx) +int EVP_CIPHER_CTX_get_key_length(const EVP_CIPHER_CTX *ctx) { - return ctx->key_len; + int ok; + size_t v = ctx->key_len; + OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END }; + + params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN, &v); + ok = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params); + + return ok != 0 ? (int)v : EVP_CTRL_RET_UNSUPPORTED; } -int EVP_CIPHER_nid(const EVP_CIPHER *cipher) +int EVP_CIPHER_get_nid(const EVP_CIPHER *cipher) { return cipher->nid; } -int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx) +int EVP_CIPHER_CTX_get_nid(const EVP_CIPHER_CTX *ctx) { return ctx->cipher->nid; } -int EVP_MD_block_size(const EVP_MD *md) +int EVP_CIPHER_is_a(const EVP_CIPHER *cipher, const char *name) { - return md->block_size; + if (cipher == NULL) + return 0; + if (cipher->prov != NULL) + return evp_is_a(cipher->prov, cipher->name_id, NULL, name); + return evp_is_a(NULL, 0, EVP_CIPHER_get0_name(cipher), name); +} + +int evp_cipher_get_number(const EVP_CIPHER *cipher) +{ + return cipher->name_id; +} + +const char *EVP_CIPHER_get0_name(const EVP_CIPHER *cipher) +{ + if (cipher->type_name != NULL) + return cipher->type_name; +#ifndef FIPS_MODULE + return OBJ_nid2sn(EVP_CIPHER_get_nid(cipher)); +#else + return NULL; +#endif +} + +const char *EVP_CIPHER_get0_description(const EVP_CIPHER *cipher) +{ + if (cipher->description != NULL) + return cipher->description; +#ifndef FIPS_MODULE + return OBJ_nid2ln(EVP_CIPHER_get_nid(cipher)); +#else + return NULL; +#endif +} + +int EVP_CIPHER_names_do_all(const EVP_CIPHER *cipher, + void (*fn)(const char *name, void *data), + void *data) +{ + if (cipher->prov != NULL) + return evp_names_do_all(cipher->prov, cipher->name_id, fn, data); + + return 1; +} + +const OSSL_PROVIDER *EVP_CIPHER_get0_provider(const EVP_CIPHER *cipher) +{ + return cipher->prov; +} + +int EVP_CIPHER_get_mode(const EVP_CIPHER *cipher) +{ + return EVP_CIPHER_get_flags(cipher) & EVP_CIPH_MODE; +} + +int EVP_MD_is_a(const EVP_MD *md, const char *name) +{ + if (md == NULL) + return 0; + if (md->prov != NULL) + return evp_is_a(md->prov, md->name_id, NULL, name); + return evp_is_a(NULL, 0, EVP_MD_get0_name(md), name); +} + +int evp_md_get_number(const EVP_MD *md) +{ + return md->name_id; } -int EVP_MD_type(const EVP_MD *md) +const char *EVP_MD_get0_description(const EVP_MD *md) +{ + if (md->description != NULL) + return md->description; +#ifndef FIPS_MODULE + return OBJ_nid2ln(EVP_MD_nid(md)); +#else + return NULL; +#endif +} + +const char *EVP_MD_get0_name(const EVP_MD *md) +{ + if (md == NULL) + return NULL; + if (md->type_name != NULL) + return md->type_name; +#ifndef FIPS_MODULE + return OBJ_nid2sn(EVP_MD_nid(md)); +#else + return NULL; +#endif +} + +int EVP_MD_names_do_all(const EVP_MD *md, + void (*fn)(const char *name, void *data), + void *data) +{ + if (md->prov != NULL) + return evp_names_do_all(md->prov, md->name_id, fn, data); + + return 1; +} + +const OSSL_PROVIDER *EVP_MD_get0_provider(const EVP_MD *md) +{ + return md->prov; +} + +int EVP_MD_get_type(const EVP_MD *md) { return md->type; } -int EVP_MD_pkey_type(const EVP_MD *md) +int EVP_MD_get_pkey_type(const EVP_MD *md) { return md->pkey_type; } -int EVP_MD_size(const EVP_MD *md) +int EVP_MD_get_block_size(const EVP_MD *md) { - if (!md) { - EVPerr(EVP_F_EVP_MD_SIZE, EVP_R_MESSAGE_DIGEST_IS_NULL); + if (md == NULL) { + ERR_raise(ERR_LIB_EVP, EVP_R_MESSAGE_DIGEST_IS_NULL); + return -1; + } + return md->block_size; +} + +int EVP_MD_get_size(const EVP_MD *md) +{ + if (md == NULL) { + ERR_raise(ERR_LIB_EVP, EVP_R_MESSAGE_DIGEST_IS_NULL); return -1; } return md->md_size; } -unsigned long EVP_MD_flags(const EVP_MD *md) +unsigned long EVP_MD_get_flags(const EVP_MD *md) { return md->flags; } EVP_MD *EVP_MD_meth_new(int md_type, int pkey_type) { - EVP_MD *md = OPENSSL_zalloc(sizeof(*md)); + EVP_MD *md = evp_md_new(); if (md != NULL) { md->type = md_type; md->pkey_type = pkey_type; + md->origin = EVP_ORIG_METH; } return md; } + EVP_MD *EVP_MD_meth_dup(const EVP_MD *md) { - EVP_MD *to = EVP_MD_meth_new(md->type, md->pkey_type); + EVP_MD *to = NULL; + + /* + * Non-legacy EVP_MDs can't be duplicated like this. + * Use EVP_MD_up_ref() instead. + */ + if (md->prov != NULL) + return NULL; + + if ((to = EVP_MD_meth_new(md->type, md->pkey_type)) != NULL) { + CRYPTO_RWLOCK *lock = to->lock; - if (to != NULL) memcpy(to, md, sizeof(*to)); + to->lock = lock; + to->origin = EVP_ORIG_METH; + } return to; } -void EVP_MD_meth_free(EVP_MD *md) + +void evp_md_free_int(EVP_MD *md) { + OPENSSL_free(md->type_name); + ossl_provider_free(md->prov); + CRYPTO_THREAD_lock_free(md->lock); OPENSSL_free(md); } + +void EVP_MD_meth_free(EVP_MD *md) +{ + if (md == NULL || md->origin != EVP_ORIG_METH) + return; + + evp_md_free_int(md); +} + int EVP_MD_meth_set_input_blocksize(EVP_MD *md, int blocksize) { + if (md->block_size != 0) + return 0; + md->block_size = blocksize; return 1; } int EVP_MD_meth_set_result_size(EVP_MD *md, int resultsize) { + if (md->md_size != 0) + return 0; + md->md_size = resultsize; return 1; } int EVP_MD_meth_set_app_datasize(EVP_MD *md, int datasize) { + if (md->ctx_size != 0) + return 0; + md->ctx_size = datasize; return 1; } int EVP_MD_meth_set_flags(EVP_MD *md, unsigned long flags) { + if (md->flags != 0) + return 0; + md->flags = flags; return 1; } int EVP_MD_meth_set_init(EVP_MD *md, int (*init)(EVP_MD_CTX *ctx)) { + if (md->init != NULL) + return 0; + md->init = init; return 1; } @@ -382,29 +907,44 @@ int EVP_MD_meth_set_update(EVP_MD *md, int (*update)(EVP_MD_CTX *ctx, const void *data, size_t count)) { + if (md->update != NULL) + return 0; + md->update = update; return 1; } int EVP_MD_meth_set_final(EVP_MD *md, int (*final)(EVP_MD_CTX *ctx, unsigned char *md)) { + if (md->final != NULL) + return 0; + md->final = final; return 1; } int EVP_MD_meth_set_copy(EVP_MD *md, int (*copy)(EVP_MD_CTX *to, const EVP_MD_CTX *from)) { + if (md->copy != NULL) + return 0; + md->copy = copy; return 1; } int EVP_MD_meth_set_cleanup(EVP_MD *md, int (*cleanup)(EVP_MD_CTX *ctx)) { + if (md->cleanup != NULL) + return 0; + md->cleanup = cleanup; return 1; } int EVP_MD_meth_set_ctrl(EVP_MD *md, int (*ctrl)(EVP_MD_CTX *ctx, int cmd, int p1, void *p2)) { + if (md->md_ctrl != NULL) + return 0; + md->md_ctrl = ctrl; return 1; } @@ -455,18 +995,40 @@ int (*EVP_MD_meth_get_ctrl(const EVP_MD *md))(EVP_MD_CTX *ctx, int cmd, return md->md_ctrl; } +#ifndef OPENSSL_NO_DEPRECATED_3_0 const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx) { - if (!ctx) + if (ctx == NULL) + return NULL; + return ctx->reqdigest; +} +#endif + +const EVP_MD *EVP_MD_CTX_get0_md(const EVP_MD_CTX *ctx) +{ + if (ctx == NULL) return NULL; - return ctx->digest; + return ctx->reqdigest; } -EVP_PKEY_CTX *EVP_MD_CTX_pkey_ctx(const EVP_MD_CTX *ctx) +EVP_MD *EVP_MD_CTX_get1_md(EVP_MD_CTX *ctx) +{ + EVP_MD *md; + + if (ctx == NULL) + return NULL; + md = (EVP_MD *)ctx->reqdigest; + if (md == NULL || !EVP_MD_up_ref(md)) + return NULL; + return md; +} + +EVP_PKEY_CTX *EVP_MD_CTX_get_pkey_ctx(const EVP_MD_CTX *ctx) { return ctx->pctx; } +#if !defined(FIPS_MODULE) void EVP_MD_CTX_set_pkey_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pctx) { /* @@ -485,8 +1047,9 @@ void EVP_MD_CTX_set_pkey_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pctx) EVP_MD_CTX_clear_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX); } } +#endif /* !defined(FIPS_MODULE) */ -void *EVP_MD_CTX_md_data(const EVP_MD_CTX *ctx) +void *EVP_MD_CTX_get0_md_data(const EVP_MD_CTX *ctx) { return ctx->md_data; } @@ -519,17 +1082,135 @@ int EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx, int flags) return (ctx->flags & flags); } +static int evp_cipher_ctx_enable_use_bits(EVP_CIPHER_CTX *ctx, + unsigned int enable) +{ + OSSL_PARAM params[] = { OSSL_PARAM_END, OSSL_PARAM_END }; + + params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_USE_BITS, &enable); + return EVP_CIPHER_CTX_set_params(ctx, params); +} + void EVP_CIPHER_CTX_set_flags(EVP_CIPHER_CTX *ctx, int flags) { + int oldflags = ctx->flags; + ctx->flags |= flags; + if (((oldflags ^ ctx->flags) & EVP_CIPH_FLAG_LENGTH_BITS) != 0) + evp_cipher_ctx_enable_use_bits(ctx, 1); } void EVP_CIPHER_CTX_clear_flags(EVP_CIPHER_CTX *ctx, int flags) { + int oldflags = ctx->flags; + ctx->flags &= ~flags; + if (((oldflags ^ ctx->flags) & EVP_CIPH_FLAG_LENGTH_BITS) != 0) + evp_cipher_ctx_enable_use_bits(ctx, 0); } int EVP_CIPHER_CTX_test_flags(const EVP_CIPHER_CTX *ctx, int flags) { return (ctx->flags & flags); } + +#if !defined(FIPS_MODULE) + +int EVP_PKEY_CTX_set_group_name(EVP_PKEY_CTX *ctx, const char *name) +{ + OSSL_PARAM params[] = { OSSL_PARAM_END, OSSL_PARAM_END }; + + if (ctx == NULL || !EVP_PKEY_CTX_IS_GEN_OP(ctx)) { + ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); + /* Uses the same return values as EVP_PKEY_CTX_ctrl */ + return -2; + } + + if (name == NULL) + return -1; + + params[0] = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_GROUP_NAME, + (char *)name, 0); + return EVP_PKEY_CTX_set_params(ctx, params); +} + +int EVP_PKEY_CTX_get_group_name(EVP_PKEY_CTX *ctx, char *name, size_t namelen) +{ + OSSL_PARAM params[] = { OSSL_PARAM_END, OSSL_PARAM_END }; + OSSL_PARAM *p = params; + + if (ctx == NULL || !EVP_PKEY_CTX_IS_GEN_OP(ctx)) { + /* There is no legacy support for this */ + ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED); + /* Uses the same return values as EVP_PKEY_CTX_ctrl */ + return -2; + } + + if (name == NULL) + return -1; + + *p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_GROUP_NAME, + name, namelen); + if (!EVP_PKEY_CTX_get_params(ctx, params)) + return -1; + return 1; +} + +/* + * evp_pkey_keygen() abstracts from the explicit use of B<EVP_PKEY_CTX> + * while providing a generic way of generating a new asymmetric key pair + * of algorithm type I<name> (e.g., C<RSA> or C<EC>). + * The library context I<libctx> and property query I<propq> + * are used when fetching algorithms from providers. + * The I<params> specify algorithm-specific parameters + * such as the RSA modulus size or the name of an EC curve. + */ +static EVP_PKEY *evp_pkey_keygen(OSSL_LIB_CTX *libctx, const char *name, + const char *propq, const OSSL_PARAM *params) +{ + EVP_PKEY *pkey = NULL; + EVP_PKEY_CTX *ctx = EVP_PKEY_CTX_new_from_name(libctx, name, propq); + + if (ctx != NULL + && EVP_PKEY_keygen_init(ctx) > 0 + && EVP_PKEY_CTX_set_params(ctx, params)) + (void)EVP_PKEY_generate(ctx, &pkey); + + EVP_PKEY_CTX_free(ctx); + return pkey; +} + +EVP_PKEY *EVP_PKEY_Q_keygen(OSSL_LIB_CTX *libctx, const char *propq, + const char *type, ...) +{ + va_list args; + size_t bits; + char *name; + OSSL_PARAM params[] = { OSSL_PARAM_END, OSSL_PARAM_END }; + EVP_PKEY *ret = NULL; + + va_start(args, type); + + if (OPENSSL_strcasecmp(type, "RSA") == 0) { + bits = va_arg(args, size_t); + params[0] = OSSL_PARAM_construct_size_t(OSSL_PKEY_PARAM_RSA_BITS, &bits); + } else if (OPENSSL_strcasecmp(type, "EC") == 0) { + name = va_arg(args, char *); + params[0] = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_GROUP_NAME, + name, 0); + } else if (OPENSSL_strcasecmp(type, "ED25519") != 0 + && OPENSSL_strcasecmp(type, "X25519") != 0 + && OPENSSL_strcasecmp(type, "ED448") != 0 + && OPENSSL_strcasecmp(type, "X448") != 0 + && OPENSSL_strcasecmp(type, "SM2") != 0) { + ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_INVALID_ARGUMENT); + goto end; + } + ret = evp_pkey_keygen(libctx, type, propq, params); + + end: + va_end(args); + return ret; +} + +#endif /* !defined(FIPS_MODULE) */ |