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-rw-r--r--src/pki.c123
-rw-r--r--src/pki_crypto.c46
-rw-r--r--src/pki_gcrypt.c43
3 files changed, 121 insertions, 91 deletions
diff --git a/src/pki.c b/src/pki.c
index 593cc41..e53659b 100644
--- a/src/pki.c
+++ b/src/pki.c
@@ -354,108 +354,49 @@ ssh_key ssh_pki_publickey_from_privatekey(ssh_key privkey) {
* the content of sigbuf */
ssh_string ssh_pki_do_sign(ssh_session session, ssh_buffer sigbuf,
ssh_key privatekey) {
- struct ssh_crypto_struct *crypto = session->current_crypto ? session->current_crypto :
- session->next_crypto;
- unsigned char hash[SHA_DIGEST_LEN + 1] = {0};
- ssh_string session_str = NULL;
- ssh_string signature = NULL;
- SIGNATURE *sign = NULL;
- SHACTX ctx = NULL;
-#ifdef HAVE_LIBGCRYPT
- gcry_sexp_t gcryhash;
-#endif
+ struct ssh_crypto_struct *crypto = session->current_crypto ? session->current_crypto :
+ session->next_crypto;
+ unsigned char hash[SHA_DIGEST_LEN + 1] = {0};
+ ssh_string session_str = NULL;
+ ssh_string signature = NULL;
+ struct signature_struct *sign = NULL;
+ SHACTX ctx = NULL;
+
+ if (privatekey == NULL || !ssh_key_is_private(privatekey)) {
+ return NULL;
+ }
- if(privatekey == NULL || !ssh_key_is_private(privatekey)) {
- return NULL;
- }
+ session_str = ssh_string_new(SHA_DIGEST_LEN);
+ if (session_str == NULL) {
+ return NULL;
+ }
+ ssh_string_fill(session_str, crypto->session_id, SHA_DIGEST_LEN);
- session_str = ssh_string_new(SHA_DIGEST_LEN);
- if (session_str == NULL) {
- return NULL;
- }
- ssh_string_fill(session_str, crypto->session_id, SHA_DIGEST_LEN);
+ ctx = sha1_init();
+ if (ctx == NULL) {
+ ssh_string_free(session_str);
+ return NULL;
+ }
- ctx = sha1_init();
- if (ctx == NULL) {
+ sha1_update(ctx, session_str, ssh_string_len(session_str) + 4);
ssh_string_free(session_str);
- return NULL;
- }
-
- sha1_update(ctx, session_str, ssh_string_len(session_str) + 4);
- ssh_string_free(session_str);
- sha1_update(ctx, buffer_get_rest(sigbuf), buffer_get_rest_len(sigbuf));
- sha1_final(hash + 1,ctx);
- hash[0] = 0;
+ sha1_update(ctx, buffer_get_rest(sigbuf), buffer_get_rest_len(sigbuf));
+ sha1_final(hash + 1,ctx);
+ hash[0] = 0;
#ifdef DEBUG_CRYPTO
- ssh_print_hexa("Hash being signed with dsa", hash + 1, SHA_DIGEST_LEN);
+ ssh_print_hexa("Hash being signed with dsa", hash + 1, SHA_DIGEST_LEN);
#endif
- sign = malloc(sizeof(SIGNATURE));
- if (sign == NULL) {
- return NULL;
- }
-
- switch(privatekey->type) {
- case SSH_KEYTYPE_DSS:
-#ifdef HAVE_LIBGCRYPT
- if (gcry_sexp_build(&gcryhash, NULL, "%b", SHA_DIGEST_LEN + 1, hash) ||
- gcry_pk_sign(&sign->dsa_sign, gcryhash, privatekey->dsa)) {
- ssh_set_error(session, SSH_FATAL, "Signing: libcrypt error");
- gcry_sexp_release(gcryhash);
- signature_free(sign);
+ sign = pki_do_sign(privatekey, hash);
+ if (sign == NULL) {
return NULL;
- }
-#elif defined HAVE_LIBCRYPTO
- sign->dsa_sign = DSA_do_sign(hash + 1, SHA_DIGEST_LEN,
- privatekey->dsa);
- if (sign->dsa_sign == NULL) {
- ssh_set_error(session, SSH_FATAL, "Signing: openssl error");
- signature_free(sign);
- return NULL;
- }
-#ifdef DEBUG_CRYPTO
- ssh_print_bignum("r", sign->dsa_sign->r);
- ssh_print_bignum("s", sign->dsa_sign->s);
-#endif
-#endif /* HAVE_LIBCRYPTO */
- sign->rsa_sign = NULL;
- break;
- case SSH_KEYTYPE_RSA:
-#ifdef HAVE_LIBGCRYPT
- if (gcry_sexp_build(&gcryhash, NULL, "(data(flags pkcs1)(hash sha1 %b))",
- SHA_DIGEST_LEN, hash + 1) ||
- gcry_pk_sign(&sign->rsa_sign, gcryhash, privatekey->rsa)) {
- ssh_set_error(session, SSH_FATAL, "Signing: libcrypt error");
- gcry_sexp_release(gcryhash);
- signature_free(sign);
- return NULL;
- }
-#elif defined HAVE_LIBCRYPTO
- sign->rsa_sign = RSA_do_sign(hash + 1, SHA_DIGEST_LEN,
- privatekey->rsa);
- if (sign->rsa_sign == NULL) {
- ssh_set_error(session, SSH_FATAL, "Signing: openssl error");
- signature_free(sign);
- return NULL;
- }
-#endif
- sign->dsa_sign = NULL;
- break;
- default:
- signature_free(sign);
- return NULL;
- }
-#ifdef HAVE_LIBGCRYPT
- gcry_sexp_release(gcryhash);
-#endif
-
- sign->type = privatekey->type;
+ }
- signature = signature_to_string(sign);
- signature_free(sign);
+ signature = signature_to_string(sign);
+ signature_free(sign);
- return signature;
+ return signature;
}
diff --git a/src/pki_crypto.c b/src/pki_crypto.c
index 532e1ea..2c99daf 100644
--- a/src/pki_crypto.c
+++ b/src/pki_crypto.c
@@ -35,6 +35,7 @@
#include "libssh/session.h"
#include "libssh/callbacks.h"
#include "libssh/pki.h"
+#include "libssh/keys.h"
static int pem_get_password(char *buf, int size, int rwflag, void *userdata) {
ssh_session session = userdata;
@@ -218,4 +219,49 @@ fail:
return NULL;
}
+struct signature_struct *pki_do_sign(ssh_key privatekey,
+ const unsigned char *hash) {
+ struct signature_struct *sign;
+
+ sign = malloc(sizeof(SIGNATURE));
+ if (sign == NULL) {
+ return NULL;
+ }
+ sign->type = privatekey->type;
+
+ switch(privatekey->type) {
+ case SSH_KEYTYPE_DSS:
+ sign->dsa_sign = DSA_do_sign(hash + 1, SHA_DIGEST_LEN,
+ privatekey->dsa);
+ if (sign->dsa_sign == NULL) {
+ signature_free(sign);
+ return NULL;
+ }
+
+#ifdef DEBUG_CRYPTO
+ ssh_print_bignum("r", sign->dsa_sign->r);
+ ssh_print_bignum("s", sign->dsa_sign->s);
+#endif
+
+ sign->rsa_sign = NULL;
+ break;
+ case SSH_KEYTYPE_RSA:
+ case SSH_KEYTYPE_RSA1:
+ sign->rsa_sign = RSA_do_sign(hash + 1, SHA_DIGEST_LEN,
+ privatekey->rsa);
+ if (sign->rsa_sign == NULL) {
+ signature_free(sign);
+ return NULL;
+ }
+ sign->dsa_sign = NULL;
+ break;
+ case SSH_KEYTYPE_ECDSA:
+ case SSH_KEYTYPE_UNKNOWN:
+ signature_free(sign);
+ return NULL;
+ }
+
+ return sign;
+}
+
#endif /* _PKI_CRYPTO_H */
diff --git a/src/pki_gcrypt.c b/src/pki_gcrypt.c
index 30448c2..9c6cd67 100644
--- a/src/pki_gcrypt.c
+++ b/src/pki_gcrypt.c
@@ -856,6 +856,49 @@ fail:
return NULL;
}
+struct signature_struct *pki_do_sign(ssh_key privatekey,
+ const unsigned char *hash) {
+ struct signature_struct *sign;
+ gcry_sexp_t gcryhash;
+
+ sign = malloc(sizeof(SIGNATURE));
+ if (sign == NULL) {
+ return NULL;
+ }
+ sign->type = privatekey->type;
+
+ switch(privatekey->type) {
+ case SSH_KEYTYPE_DSS:
+ if (gcry_sexp_build(&gcryhash, NULL, "%b", SHA_DIGEST_LEN + 1, hash) ||
+ gcry_pk_sign(&sign->dsa_sign, gcryhash, privatekey->dsa)) {
+ gcry_sexp_release(gcryhash);
+ signature_free(sign);
+ return NULL;
+ }
+ sign->rsa_sign = NULL;
+ break;
+ case SSH_KEYTYPE_RSA:
+ case SSH_KEYTYPE_RSA1:
+ if (gcry_sexp_build(&gcryhash, NULL, "(data(flags pkcs1)(hash sha1 %b))",
+ SHA_DIGEST_LEN, hash + 1) ||
+ gcry_pk_sign(&sign->rsa_sign, gcryhash, privatekey->rsa)) {
+ gcry_sexp_release(gcryhash);
+ signature_free(sign);
+ return NULL;
+ }
+ sign->dsa_sign = NULL;
+ break;
+ case SSH_KEYTYPE_ECDSA:
+ case SSH_KEYTYPE_UNKNOWN:
+ signature_free(sign);
+ return NULL;
+ }
+
+ gcry_sexp_release(gcryhash);
+
+ return sign;
+}
+
#endif /* HAVE_LIBGCRYPT */
/**
generated by cgit (git 2.34.1) at 2025-07-05 16:23:49 +0000