2 * Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
12 #include "internal/cryptlib.h"
13 #include <openssl/objects.h>
14 #include <openssl/evp.h>
15 #include "internal/evp_int.h"
17 #define M_check_autoarg(ctx, arg, arglen, err) \
18 if (ctx->pmeth->flags & EVP_PKEY_FLAG_AUTOARGLEN) \
20 size_t pksize = (size_t)EVP_PKEY_size(ctx->pkey); \
26 else if (*arglen < pksize) \
28 EVPerr(err, EVP_R_BUFFER_TOO_SMALL); /*ckerr_ignore*/\
33 int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx)
36 if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) {
37 EVPerr(EVP_F_EVP_PKEY_SIGN_INIT,
38 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
41 ctx->operation = EVP_PKEY_OP_SIGN;
42 if (!ctx->pmeth->sign_init)
44 ret = ctx->pmeth->sign_init(ctx);
46 ctx->operation = EVP_PKEY_OP_UNDEFINED;
50 int EVP_PKEY_sign(EVP_PKEY_CTX *ctx,
51 unsigned char *sig, size_t *siglen,
52 const unsigned char *tbs, size_t tbslen)
54 if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) {
55 EVPerr(EVP_F_EVP_PKEY_SIGN,
56 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
59 if (ctx->operation != EVP_PKEY_OP_SIGN) {
60 EVPerr(EVP_F_EVP_PKEY_SIGN, EVP_R_OPERATON_NOT_INITIALIZED);
63 M_check_autoarg(ctx, sig, siglen, EVP_F_EVP_PKEY_SIGN)
64 return ctx->pmeth->sign(ctx, sig, siglen, tbs, tbslen);
67 int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx)
70 if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) {
71 EVPerr(EVP_F_EVP_PKEY_VERIFY_INIT,
72 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
75 ctx->operation = EVP_PKEY_OP_VERIFY;
76 if (!ctx->pmeth->verify_init)
78 ret = ctx->pmeth->verify_init(ctx);
80 ctx->operation = EVP_PKEY_OP_UNDEFINED;
84 int EVP_PKEY_verify(EVP_PKEY_CTX *ctx,
85 const unsigned char *sig, size_t siglen,
86 const unsigned char *tbs, size_t tbslen)
88 if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) {
89 EVPerr(EVP_F_EVP_PKEY_VERIFY,
90 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
93 if (ctx->operation != EVP_PKEY_OP_VERIFY) {
94 EVPerr(EVP_F_EVP_PKEY_VERIFY, EVP_R_OPERATON_NOT_INITIALIZED);
97 return ctx->pmeth->verify(ctx, sig, siglen, tbs, tbslen);
100 int EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx)
103 if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) {
104 EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER_INIT,
105 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
108 ctx->operation = EVP_PKEY_OP_VERIFYRECOVER;
109 if (!ctx->pmeth->verify_recover_init)
111 ret = ctx->pmeth->verify_recover_init(ctx);
113 ctx->operation = EVP_PKEY_OP_UNDEFINED;
117 int EVP_PKEY_verify_recover(EVP_PKEY_CTX *ctx,
118 unsigned char *rout, size_t *routlen,
119 const unsigned char *sig, size_t siglen)
121 if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) {
122 EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER,
123 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
126 if (ctx->operation != EVP_PKEY_OP_VERIFYRECOVER) {
127 EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER, EVP_R_OPERATON_NOT_INITIALIZED);
130 M_check_autoarg(ctx, rout, routlen, EVP_F_EVP_PKEY_VERIFY_RECOVER)
131 return ctx->pmeth->verify_recover(ctx, rout, routlen, sig, siglen);
134 int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx)
137 if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) {
138 EVPerr(EVP_F_EVP_PKEY_ENCRYPT_INIT,
139 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
142 ctx->operation = EVP_PKEY_OP_ENCRYPT;
143 if (!ctx->pmeth->encrypt_init)
145 ret = ctx->pmeth->encrypt_init(ctx);
147 ctx->operation = EVP_PKEY_OP_UNDEFINED;
151 int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx,
152 unsigned char *out, size_t *outlen,
153 const unsigned char *in, size_t inlen)
155 if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) {
156 EVPerr(EVP_F_EVP_PKEY_ENCRYPT,
157 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
160 if (ctx->operation != EVP_PKEY_OP_ENCRYPT) {
161 EVPerr(EVP_F_EVP_PKEY_ENCRYPT, EVP_R_OPERATON_NOT_INITIALIZED);
164 M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_ENCRYPT)
165 return ctx->pmeth->encrypt(ctx, out, outlen, in, inlen);
168 int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx)
171 if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) {
172 EVPerr(EVP_F_EVP_PKEY_DECRYPT_INIT,
173 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
176 ctx->operation = EVP_PKEY_OP_DECRYPT;
177 if (!ctx->pmeth->decrypt_init)
179 ret = ctx->pmeth->decrypt_init(ctx);
181 ctx->operation = EVP_PKEY_OP_UNDEFINED;
185 int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx,
186 unsigned char *out, size_t *outlen,
187 const unsigned char *in, size_t inlen)
189 if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) {
190 EVPerr(EVP_F_EVP_PKEY_DECRYPT,
191 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
194 if (ctx->operation != EVP_PKEY_OP_DECRYPT) {
195 EVPerr(EVP_F_EVP_PKEY_DECRYPT, EVP_R_OPERATON_NOT_INITIALIZED);
198 M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_DECRYPT)
199 return ctx->pmeth->decrypt(ctx, out, outlen, in, inlen);
202 int EVP_PKEY_derive_init(EVP_PKEY_CTX *ctx)
205 if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) {
206 EVPerr(EVP_F_EVP_PKEY_DERIVE_INIT,
207 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
210 ctx->operation = EVP_PKEY_OP_DERIVE;
211 if (!ctx->pmeth->derive_init)
213 ret = ctx->pmeth->derive_init(ctx);
215 ctx->operation = EVP_PKEY_OP_UNDEFINED;
219 int EVP_PKEY_derive_set_peer(EVP_PKEY_CTX *ctx, EVP_PKEY *peer)
222 if (!ctx || !ctx->pmeth
223 || !(ctx->pmeth->derive || ctx->pmeth->encrypt || ctx->pmeth->decrypt)
224 || !ctx->pmeth->ctrl) {
225 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER,
226 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
229 if (ctx->operation != EVP_PKEY_OP_DERIVE
230 && ctx->operation != EVP_PKEY_OP_ENCRYPT
231 && ctx->operation != EVP_PKEY_OP_DECRYPT) {
232 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER,
233 EVP_R_OPERATON_NOT_INITIALIZED);
237 ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 0, peer);
246 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_NO_KEY_SET);
250 if (ctx->pkey->type != peer->type) {
251 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_DIFFERENT_KEY_TYPES);
256 * ran@cryptocom.ru: For clarity. The error is if parameters in peer are
257 * present (!missing) but don't match. EVP_PKEY_cmp_parameters may return
258 * 1 (match), 0 (don't match) and -2 (comparison is not defined). -1
259 * (different key types) is impossible here because it is checked earlier.
260 * -2 is OK for us here, as well as 1, so we can check for 0 only.
262 if (!EVP_PKEY_missing_parameters(peer) &&
263 !EVP_PKEY_cmp_parameters(ctx->pkey, peer)) {
264 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_DIFFERENT_PARAMETERS);
268 EVP_PKEY_free(ctx->peerkey);
271 ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 1, peer);
278 EVP_PKEY_up_ref(peer);
282 int EVP_PKEY_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *pkeylen)
284 if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) {
285 EVPerr(EVP_F_EVP_PKEY_DERIVE,
286 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
289 if (ctx->operation != EVP_PKEY_OP_DERIVE) {
290 EVPerr(EVP_F_EVP_PKEY_DERIVE, EVP_R_OPERATON_NOT_INITIALIZED);
293 M_check_autoarg(ctx, key, pkeylen, EVP_F_EVP_PKEY_DERIVE)
294 return ctx->pmeth->derive(ctx, key, pkeylen);