/*
- * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* 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
#include <openssl/params.h>
#include <openssl/core_names.h>
#include <openssl/dh.h>
+#include <openssl/ec.h>
#include "crypto/evp.h"
#include "internal/provider.h"
#include "evp_local.h"
-#if !defined(FIPS_MODE)
+#if !defined(FIPS_MODULE)
int EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
{
- int ret;
+ int ret = -1; /* Assume the worst */
const EVP_CIPHER *cipher = c->cipher;
- if (cipher->prov != NULL) {
- /*
- * The cipher has come from a provider and won't have the default flags.
- * Find the implicit form so we can check the flags.
- * TODO(3.0): This won't work for 3rd party ciphers we know nothing about
- * We'll need to think of something else for those.
- */
- cipher = EVP_get_cipherbynid(cipher->nid);
- if (cipher == NULL) {
- EVPerr(EVP_F_EVP_CIPHER_PARAM_TO_ASN1, ASN1_R_UNSUPPORTED_CIPHER);
- return -1;
- }
- }
-
- if (cipher->set_asn1_parameters != NULL)
+ /*
+ * 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 (cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1) {
+ } else if ((EVP_CIPHER_flags(cipher) & EVP_CIPH_FLAG_CUSTOM_ASN1) == 0) {
switch (EVP_CIPHER_mode(cipher)) {
case EVP_CIPH_WRAP_MODE:
- if (EVP_CIPHER_nid(cipher) == 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;
default:
ret = EVP_CIPHER_set_asn1_iv(c, type);
}
- } else
- ret = -1;
+ } 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_ALG_ID,
+ 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)
EVPerr(EVP_F_EVP_CIPHER_PARAM_TO_ASN1, ASN1_R_UNSUPPORTED_CIPHER);
else if (ret <= 0)
int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
{
- int ret;
+ int ret = -1; /* Assume the worst */
const EVP_CIPHER *cipher = c->cipher;
- if (cipher->prov != NULL) {
- /*
- * The cipher has come from a provider and won't have the default flags.
- * Find the implicit form so we can check the flags.
- */
- cipher = EVP_get_cipherbynid(cipher->nid);
- if (cipher == NULL)
- return -1;
- }
-
- if (cipher->get_asn1_parameters != NULL)
+ /*
+ * 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 (cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1) {
+ } else if ((EVP_CIPHER_flags(cipher) & EVP_CIPH_FLAG_CUSTOM_ASN1) == 0) {
switch (EVP_CIPHER_mode(cipher)) {
-
case EVP_CIPH_WRAP_MODE:
ret = 1;
break;
default:
ret = EVP_CIPHER_get_asn1_iv(c, type);
- break;
}
- } else
- ret = -1;
+ } 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_ALG_ID,
+ 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)
EVPerr(EVP_F_EVP_CIPHER_ASN1_TO_PARAM, EVP_R_UNSUPPORTED_CIPHER);
else if (ret <= 0)
{
int i = 0;
unsigned int j;
+ unsigned char *oiv = NULL;
if (type != NULL) {
+ oiv = (unsigned char *)EVP_CIPHER_CTX_original_iv(c);
j = EVP_CIPHER_CTX_iv_length(c);
OPENSSL_assert(j <= sizeof(c->iv));
- i = ASN1_TYPE_set_octetstring(type, c->oiv, j);
+ i = ASN1_TYPE_set_octetstring(type, oiv, j);
}
return i;
}
-#endif /* !defined(FIPS_MODE) */
+#endif /* !defined(FIPS_MODULE) */
/* Convert the various cipher NIDs and dummies to a proper OID NID */
int EVP_CIPHER_type(const EVP_CIPHER *ctx)
return NID_des_cfb64;
default:
-#ifdef FIPS_MODE
+#ifdef FIPS_MODULE
return NID_undef;
#else
{
}
}
-int EVP_CIPHER_block_size(const EVP_CIPHER *cipher)
+int evp_cipher_cache_constants(EVP_CIPHER *cipher)
{
int ok;
- size_t v = cipher->block_size;
- OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
-
- params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_BLOCK_SIZE, &v);
+ size_t ivlen = 0;
+ size_t blksz = 0;
+ size_t keylen = 0;
+ unsigned int mode = 0;
+ unsigned long flags = 0;
+ OSSL_PARAM params[6];
+
+ 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_ulong(OSSL_CIPHER_PARAM_FLAGS, &flags);
+ params[5] = OSSL_PARAM_construct_end();
ok = evp_do_ciph_getparams(cipher, params);
+ if (ok) {
+ /* Provided implementations may have a custom cipher_cipher */
+ if (cipher->prov != NULL && cipher->ccipher != NULL)
+ flags |= EVP_CIPH_FLAG_CUSTOM_CIPHER;
+ cipher->block_size = blksz;
+ cipher->iv_len = ivlen;
+ cipher->key_len = keylen;
+ cipher->flags = flags | mode;
+ }
+ return ok;
+}
- return ok != 0 ? (int)v : EVP_CTRL_RET_UNSUPPORTED;
+int EVP_CIPHER_block_size(const EVP_CIPHER *cipher)
+{
+ return cipher->block_size;
}
int EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx)
const unsigned char *in, unsigned int inl)
{
if (ctx->cipher->prov != NULL) {
- size_t outl = 0; /* ignored */
- int blocksize = EVP_CIPHER_CTX_block_size(ctx);
+ /*
+ * 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_block_size(ctx);
if (ctx->cipher->ccipher != NULL)
- return
- ctx->cipher->ccipher(ctx->provctx, out, &outl,
- inl + (blocksize == 1 ? 0 : blocksize),
- in, (size_t)inl);
- return 0;
+ ret = ctx->cipher->ccipher(ctx->provctx, out, &outl,
+ inl + (blocksize == 1 ? 0 : blocksize),
+ in, (size_t)inl)
+ ? (int)outl : -1;
+ else if (in != NULL)
+ ret = ctx->cipher->cupdate(ctx->provctx, out, &outl,
+ inl + (blocksize == 1 ? 0 : blocksize),
+ in, (size_t)inl);
+ else
+ ret = ctx->cipher->cfinal(ctx->provctx, out, &outl,
+ blocksize == 1 ? 0 : blocksize);
+
+ return ret;
}
return ctx->cipher->do_cipher(ctx, out, in, inl);
unsigned long EVP_CIPHER_flags(const EVP_CIPHER *cipher)
{
- int ok;
- unsigned long v = cipher->flags;
- OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
-
- params[0] = OSSL_PARAM_construct_ulong(OSSL_CIPHER_PARAM_FLAGS, &v);
- ok = evp_do_ciph_getparams(cipher, params);
-
- return ok != 0 ? v : 0;
+ return cipher->flags;
}
void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx)
int EVP_CIPHER_iv_length(const EVP_CIPHER *cipher)
{
- int ok;
- size_t v = cipher->iv_len;
- OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
-
- params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN, &v);
- ok = evp_do_ciph_getparams(cipher, params);
-
- return ok != 0 ? (int)v : EVP_CTRL_RET_UNSUPPORTED;
+ return cipher->iv_len;
}
int EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx)
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->provctx, params);
+
+ return ok != 0 ? v : NULL;
}
/*
int EVP_CIPHER_key_length(const EVP_CIPHER *cipher)
{
- int ok;
- size_t v = cipher->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_getparams(cipher, params);
-
- return ok != 0 ? (int)v : EVP_CTRL_RET_UNSUPPORTED;
+ return cipher->key_len;
}
int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx)
int EVP_CIPHER_is_a(const EVP_CIPHER *cipher, const char *name)
{
- return evp_is_a(cipher->prov, cipher->name_id, name);
+ if (cipher->prov != NULL)
+ return evp_is_a(cipher->prov, cipher->name_id, NULL, name);
+ return evp_is_a(NULL, 0, EVP_CIPHER_name(cipher), name);
+}
+
+int EVP_CIPHER_number(const EVP_CIPHER *cipher)
+{
+ return cipher->name_id;
}
const char *EVP_CIPHER_name(const EVP_CIPHER *cipher)
{
if (cipher->prov != NULL)
return evp_first_name(cipher->prov, cipher->name_id);
-#ifndef FIPS_MODE
+#ifndef FIPS_MODULE
return OBJ_nid2sn(EVP_CIPHER_nid(cipher));
#else
return NULL;
#endif
}
+void EVP_CIPHER_names_do_all(const EVP_CIPHER *cipher,
+ void (*fn)(const char *name, void *data),
+ void *data)
+{
+ if (cipher->prov != NULL)
+ evp_names_do_all(cipher->prov, cipher->name_id, fn, data);
+}
+
const OSSL_PROVIDER *EVP_CIPHER_provider(const EVP_CIPHER *cipher)
{
return cipher->prov;
int EVP_CIPHER_mode(const EVP_CIPHER *cipher)
{
- int ok;
- unsigned int v = EVP_CIPHER_flags(cipher) & EVP_CIPH_MODE;
- OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
+ return EVP_CIPHER_flags(cipher) & EVP_CIPH_MODE;
+}
- params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_MODE, &v);
- ok = evp_do_ciph_getparams(cipher, params);
+int EVP_MD_is_a(const EVP_MD *md, const char *name)
+{
+ if (md->prov != NULL)
+ return evp_is_a(md->prov, md->name_id, NULL, name);
+ return evp_is_a(NULL, 0, EVP_MD_name(md), name);
+}
- return ok != 0 ? (int)v : 0;
+int EVP_MD_number(const EVP_MD *md)
+{
+ return md->name_id;
}
const char *EVP_MD_name(const EVP_MD *md)
{
if (md->prov != NULL)
return evp_first_name(md->prov, md->name_id);
-#ifndef FIPS_MODE
+#ifndef FIPS_MODULE
return OBJ_nid2sn(EVP_MD_nid(md));
#else
return NULL;
#endif
}
+void EVP_MD_names_do_all(const EVP_MD *md,
+ void (*fn)(const char *name, void *data),
+ void *data)
+{
+ if (md->prov != NULL)
+ evp_names_do_all(md->prov, md->name_id, fn, data);
+}
+
const OSSL_PROVIDER *EVP_MD_provider(const EVP_MD *md)
{
return md->prov;
return ctx->pctx;
}
-#if !defined(FIPS_MODE)
+#if !defined(FIPS_MODULE)
/* TODO(3.0): EVP_DigestSign* not yet supported in FIPS module */
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_MODE) */
+#endif /* !defined(FIPS_MODULE) */
void *EVP_MD_CTX_md_data(const EVP_MD_CTX *ctx)
{
OPENSSL_free(bin);
return rv;
}
+
+int EVP_PKEY_CTX_set_group_name(EVP_PKEY_CTX *ctx, const char *name)
+{
+ OSSL_PARAM params[] = { OSSL_PARAM_END, OSSL_PARAM_END };
+ OSSL_PARAM *p = params;
+
+ if (ctx == NULL) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
+ /* Uses the same return values as EVP_PKEY_CTX_ctrl */
+ return -2;
+ }
+
+ if (!EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
+#ifndef FIPS_MODULE
+ int nid;
+
+ /* Could be a legacy key, try and convert to a ctrl */
+ if (ctx->pmeth != NULL && (nid = OBJ_txt2nid(name)) != NID_undef) {
+# ifndef OPENSSL_NO_DH
+ if (ctx->pmeth->pkey_id == EVP_PKEY_DH)
+ return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH,
+ EVP_PKEY_OP_PARAMGEN
+ | EVP_PKEY_OP_KEYGEN,
+ EVP_PKEY_CTRL_DH_NID, nid, NULL);
+# endif
+# ifndef OPENSSL_NO_EC
+ if (ctx->pmeth->pkey_id == EVP_PKEY_EC)
+ return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC,
+ EVP_PKEY_OP_PARAMGEN|EVP_PKEY_OP_KEYGEN,
+ EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID,
+ nid, NULL);
+# endif
+ }
+#endif
+ 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,
+ (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;
+}
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