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authorAndreas Schneider <asn@cryptomilk.org>2011-09-18 22:04:03 +0200
committerAndreas Schneider <asn@cryptomilk.org>2011-10-29 19:58:28 +0200
commit2c04994443384224161d895d00255b5788e8376d (patch)
treed07f4eb26408d4e0f8b76d96212e11f23b20f699 /src/pki_crypto.c
parente799c0ce7d046606d9391d826461c2782f072fa0 (diff)
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pki: Add a ssh_key_cmp() function.
Diffstat (limited to 'src/pki_crypto.c')
-rw-r--r--src/pki_crypto.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/src/pki_crypto.c b/src/pki_crypto.c
index 850ea668..41505a7c 100644
--- a/src/pki_crypto.c
+++ b/src/pki_crypto.c
@@ -267,6 +267,64 @@ int pki_key_generate_dss(ssh_key key, int parameter){
return SSH_OK;
}
+int pki_key_compare(const ssh_key k1,
+ const ssh_key k2,
+ enum ssh_keycmp_e what)
+{
+ switch (k1->type) {
+ case SSH_KEYTYPE_DSS:
+ if (DSA_size(k1->dsa) != DSA_size(k2->dsa)) {
+ return 1;
+ }
+ if (bignum_cmp(k1->dsa->p, k2->dsa->p) != 0) {
+ return 1;
+ }
+ if (bignum_cmp(k1->dsa->q, k2->dsa->q) != 0) {
+ return 1;
+ }
+ if (bignum_cmp(k1->dsa->g, k2->dsa->g) != 0) {
+ return 1;
+ }
+ if (bignum_cmp(k1->dsa->pub_key, k2->dsa->pub_key) != 0) {
+ return 1;
+ }
+
+ if (what == SSH_KEY_CMP_PRIVATE) {
+ if (bignum_cmp(k1->dsa->priv_key, k2->dsa->priv_key) != 0) {
+ return 1;
+ }
+ }
+ break;
+ case SSH_KEYTYPE_RSA:
+ case SSH_KEYTYPE_RSA1:
+ if (RSA_size(k1->rsa) != RSA_size(k2->rsa)) {
+ return 1;
+ }
+ if (bignum_cmp(k1->rsa->e, k2->rsa->e) != 0) {
+ return 1;
+ }
+ if (bignum_cmp(k1->rsa->n, k2->rsa->n) != 0) {
+ return 1;
+ }
+
+ if (what == SSH_KEY_CMP_PRIVATE) {
+ if (bignum_cmp(k1->rsa->p, k2->rsa->p) != 0) {
+ return 1;
+ }
+
+ if (bignum_cmp(k1->rsa->q, k2->rsa->q) != 0) {
+ return 1;
+ }
+ }
+ break;
+ case SSH_KEYTYPE_ECDSA:
+ case SSH_KEYTYPE_UNKNOWN:
+ return 1;
+ }
+
+ return 0;
+}
+
ssh_key pki_private_key_from_base64(const char *b64_key,
const char *passphrase,
ssh_auth_callback auth_fn,