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pki: Remove duplicate and unused code

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Remove duplicate code previously used only in server side to generate
signatures.  Currently the code used to generate the signature is the
same for both client and server.

Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
This commit is contained in:
Anderson Toshiyuki Sasaki
2019-04-24 15:17:45 +02:00
committed by Andreas Schneider
parent dbf3f962a4
commit 01e98a6df7
4 changed files with 0 additions and 249 deletions
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6
include/libssh/pki_priv.h
View File

@@ -127,12 +127,6 @@ ssh_signature pki_do_sign_hash(const ssh_key privkey,
const unsigned char *hash,
size_t hlen,
enum ssh_digest_e hash_type);
#define pki_do_sign_sessionid(key, hash, hlen) \
pki_do_sign_sessionid_hash(key, hash, hlen, SSH_DIGEST_AUTO)
ssh_signature pki_do_sign_sessionid_hash(const ssh_key key,
const unsigned char *hash,
size_t hlen,
enum ssh_digest_e hash_type);
int pki_ed25519_sign(const ssh_key privkey, ssh_signature sig,
const unsigned char *hash, size_t hlen);
int pki_ed25519_verify(const ssh_key pubkey, ssh_signature sig,

61
src/pki_crypto.c
View File

@@ -2014,65 +2014,4 @@ ssh_signature pki_do_sign_hash(const ssh_key privkey,
return sig;
}
#ifdef WITH_SERVER
ssh_signature pki_do_sign_sessionid_hash(const ssh_key key,
const unsigned char *hash,
size_t hlen,
enum ssh_digest_e hash_type)
{
ssh_signature sig;
/* Only RSA supports different signature algorithm types now */
if (key->type != SSH_KEYTYPE_RSA && hash_type != SSH_DIGEST_AUTO) {
SSH_LOG(SSH_LOG_WARN, "Incompatible signature algorithm passed");
return NULL;
}
sig = ssh_signature_new();
if (sig == NULL) {
return NULL;
}
sig->type = key->type;
sig->type_c = ssh_key_signature_to_char(key->type, hash_type);
switch(key->type) {
case SSH_KEYTYPE_DSS:
sig->dsa_sig = DSA_do_sign(hash, hlen, key->dsa);
if (sig->dsa_sig == NULL) {
ssh_signature_free(sig);
return NULL;
}
break;
case SSH_KEYTYPE_RSA:
case SSH_KEYTYPE_RSA1:
sig->rsa_sig = _RSA_do_sign_hash(hash, hlen, key->rsa, hash_type);
if (sig->rsa_sig == NULL) {
ssh_signature_free(sig);
return NULL;
}
break;
case SSH_KEYTYPE_ECDSA_P256:
case SSH_KEYTYPE_ECDSA_P384:
case SSH_KEYTYPE_ECDSA_P521:
#ifdef HAVE_OPENSSL_ECC
sig->ecdsa_sig = ECDSA_do_sign(hash, hlen, key->ecdsa);
if (sig->ecdsa_sig == NULL) {
ssh_signature_free(sig);
return NULL;
}
break;
#endif
case SSH_KEYTYPE_ED25519:
/* ED25519 handled in caller */
case SSH_KEYTYPE_UNKNOWN:
default:
ssh_signature_free(sig);
return NULL;
}
return sig;
}
#endif /* WITH_SERVER */
#endif /* _PKI_CRYPTO_H */

113
src/pki_gcrypt.c
View File

@@ -2345,117 +2345,4 @@ ssh_signature pki_do_sign_hash(const ssh_key privkey,
return sig;
}
#ifdef WITH_SERVER
ssh_signature pki_do_sign_sessionid_hash(const ssh_key key,
const unsigned char *hash,
size_t hlen,
enum ssh_digest_e hash_type)
{
unsigned char ghash[hlen + 1];
const char *hash_c = NULL;
ssh_signature sig;
gcry_sexp_t sexp;
gcry_error_t err;
/* Only RSA supports different signature algorithm types now */
if (key->type != SSH_KEYTYPE_RSA && hash_type != SSH_DIGEST_AUTO) {
SSH_LOG(SSH_LOG_WARN, "Incompatible signature algorithm passed");
return NULL;
}
sig = ssh_signature_new();
if (sig == NULL) {
return NULL;
}
sig->type = key->type;
sig->type_c = ssh_key_signature_to_char(key->type, hash_type);
switch(key->type) {
case SSH_KEYTYPE_DSS:
/* That is to mark the number as positive */
if(hash[0] >= 0x80) {
memcpy(ghash + 1, hash, hlen);
ghash[0] = 0;
hash = ghash;
hlen += 1;
}
err = gcry_sexp_build(&sexp, NULL, "%b", hlen, hash);
if (err) {
ssh_signature_free(sig);
return NULL;
}
err = gcry_pk_sign(&sig->dsa_sig, sexp, key->dsa);
gcry_sexp_release(sexp);
if (err) {
ssh_signature_free(sig);
return NULL;
}
break;
case SSH_KEYTYPE_RSA:
switch (hash_type) {
case SSH_DIGEST_SHA1:
hash_c = "sha1";
break;
case SSH_DIGEST_SHA256:
hash_c = "sha256";
break;
case SSH_DIGEST_SHA512:
hash_c = "sha512";
break;
default:
SSH_LOG(SSH_LOG_WARN, "Incomplatible key algorithm");
return NULL;
}
err = gcry_sexp_build(&sexp,
NULL,
"(data(flags pkcs1)(hash %s %b))",
hash_c,
hlen,
hash);
if (err) {
ssh_signature_free(sig);
return NULL;
}
err = gcry_pk_sign(&sig->rsa_sig, sexp, key->rsa);
gcry_sexp_release(sexp);
if (err) {
ssh_signature_free(sig);
return NULL;
}
break;
case SSH_KEYTYPE_ED25519:
/* ED25519 handled in caller */
case SSH_KEYTYPE_ECDSA_P256:
case SSH_KEYTYPE_ECDSA_P384:
case SSH_KEYTYPE_ECDSA_P521:
#ifdef HAVE_GCRYPT_ECC
err = gcry_sexp_build(&sexp,
NULL,
"(data(flags raw)(value %b))",
hlen,
hash);
if (err) {
ssh_signature_free(sig);
return NULL;
}
err = gcry_pk_sign(&sig->ecdsa_sig, sexp, key->ecdsa);
gcry_sexp_release(sexp);
if (err) {
ssh_signature_free(sig);
return NULL;
}
break;
#endif
case SSH_KEYTYPE_RSA1:
case SSH_KEYTYPE_UNKNOWN:
default:
return NULL;
}
return sig;
}
#endif /* WITH_SERVER */
#endif /* HAVE_LIBGCRYPT */

69
src/pki_mbedcrypto.c
View File

@@ -1228,75 +1228,6 @@ ssh_signature pki_do_sign_hash(const ssh_key privkey,
return sig;
}
#ifdef WITH_SERVER
ssh_signature pki_do_sign_sessionid_hash(const ssh_key key,
const unsigned char *hash,
size_t hlen,
enum ssh_digest_e hash_type)
{
ssh_signature sig = NULL;
int rc;
/* Only RSA supports different signature algorithm types now */
if (key->type != SSH_KEYTYPE_RSA && hash_type != SSH_DIGEST_AUTO) {
SSH_LOG(SSH_LOG_WARN, "Incompatible signature algorithm passed");
return NULL;
}
sig = ssh_signature_new();
if (sig == NULL) {
return NULL;
}
sig->type = key->type;
sig->type_c = ssh_key_signature_to_char(key->type, hash_type);
switch (key->type) {
case SSH_KEYTYPE_RSA:
sig->rsa_sig = rsa_do_sign_hash(hash, hlen, key->rsa, hash_type);
if (sig->rsa_sig == NULL) {
ssh_signature_free(sig);
return NULL;
}
break;
case SSH_KEYTYPE_ECDSA_P256:
case SSH_KEYTYPE_ECDSA_P384:
case SSH_KEYTYPE_ECDSA_P521:
sig->ecdsa_sig.r = bignum_new();
if (sig->ecdsa_sig.r == NULL) {
return NULL;
}
sig->ecdsa_sig.s = bignum_new();
if (sig->ecdsa_sig.s == NULL) {
bignum_safe_free(sig->ecdsa_sig.r);
return NULL;
}
rc = mbedtls_ecdsa_sign(&key->ecdsa->grp,
sig->ecdsa_sig.r,
sig->ecdsa_sig.s,
&key->ecdsa->d,
hash,
hlen,
mbedtls_ctr_drbg_random,
ssh_get_mbedtls_ctr_drbg_context());
if (rc != 0) {
ssh_signature_free(sig);
return NULL;
}
break;
case SSH_KEYTYPE_ED25519:
/* ED25519 handled in caller */
default:
ssh_signature_free(sig);
return NULL;
}
return sig;
}
#endif /* WITH_SERVER */
const char *pki_key_ecdsa_nid_to_name(int nid)
{
switch (nid) {