417830d981
It's amazing how short p_ed25519.c is. BUG=187 Change-Id: Ib2a5fa7a4acf2087ece954506f81e91a1ed483e1 Reviewed-on: https://boringssl-review.googlesource.com/14449 Commit-Queue: David Benjamin <davidben@google.com> Reviewed-by: Adam Langley <agl@google.com>
72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
/* Copyright (c) 2017, Google Inc.
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
|
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
|
|
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
|
|
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
|
|
|
|
#include <openssl/evp.h>
|
|
|
|
#include <openssl/curve25519.h>
|
|
#include <openssl/err.h>
|
|
|
|
#include "internal.h"
|
|
|
|
|
|
/* Ed25519 has no parameters to copy. */
|
|
static int pkey_ed25519_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src) { return 1; }
|
|
|
|
static int pkey_ed25519_sign_message(EVP_PKEY_CTX *ctx, uint8_t *sig,
|
|
size_t *siglen, const uint8_t *tbs,
|
|
size_t tbslen) {
|
|
ED25519_KEY *key = ctx->pkey->pkey.ptr;
|
|
if (!key->has_private) {
|
|
OPENSSL_PUT_ERROR(EVP, EVP_R_NOT_A_PRIVATE_KEY);
|
|
return 0;
|
|
}
|
|
|
|
*siglen = 64;
|
|
if (sig == NULL) {
|
|
return 1;
|
|
}
|
|
|
|
return ED25519_sign(sig, tbs, tbslen, key->key.priv);
|
|
}
|
|
|
|
static int pkey_ed25519_verify_message(EVP_PKEY_CTX *ctx, const uint8_t *sig,
|
|
size_t siglen, const uint8_t *tbs,
|
|
size_t tbslen) {
|
|
ED25519_KEY *key = ctx->pkey->pkey.ptr;
|
|
if (siglen != 64 ||
|
|
!ED25519_verify(tbs, tbslen, sig, key->key.pub.value)) {
|
|
OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_SIGNATURE);
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
const EVP_PKEY_METHOD ed25519_pkey_meth = {
|
|
EVP_PKEY_ED25519,
|
|
NULL /* init */,
|
|
pkey_ed25519_copy,
|
|
NULL /* cleanup */,
|
|
NULL /* keygen */,
|
|
NULL /* sign */,
|
|
pkey_ed25519_sign_message,
|
|
NULL /* verify */,
|
|
pkey_ed25519_verify_message,
|
|
NULL /* verify_recover */,
|
|
NULL /* encrypt */,
|
|
NULL /* decrypt */,
|
|
NULL /* derive */,
|
|
NULL /* ctrl */,
|
|
};
|