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diff -up openssh-8.7p1/sshkey.c.evpgenrsa openssh-8.7p1/sshkey.c
--- openssh-8.7p1/sshkey.c.evpgenrsa 2022-06-30 15:14:58.200518353 +0200
+++ openssh-8.7p1/sshkey.c 2022-06-30 15:24:31.499641196 +0200
@@ -1657,7 +1657,8 @@ sshkey_cert_type(const struct sshkey *k)
static int
rsa_generate_private_key(u_int bits, RSA **rsap)
{
- RSA *private = NULL;
+ EVP_PKEY_CTX *ctx = NULL;
+ EVP_PKEY *res = NULL;
BIGNUM *f4 = NULL;
int ret = SSH_ERR_INTERNAL_ERROR;
@@ -1667,20 +1668,42 @@ rsa_generate_private_key(u_int bits, RSA
bits > SSHBUF_MAX_BIGNUM * 8)
return SSH_ERR_KEY_LENGTH;
*rsap = NULL;
- if ((private = RSA_new()) == NULL || (f4 = BN_new()) == NULL) {
+
+ if ((ctx = EVP_PKEY_CTX_new_from_name(NULL, "RSA", NULL)) == NULL
+ || (f4 = BN_new()) == NULL || !BN_set_word(f4, RSA_F4)) {
ret = SSH_ERR_ALLOC_FAIL;
goto out;
}
- if (!BN_set_word(f4, RSA_F4) ||
- !RSA_generate_key_ex(private, bits, f4, NULL)) {
+
+ if (EVP_PKEY_keygen_init(ctx) <= 0) {
+ ret = SSH_ERR_LIBCRYPTO_ERROR;
+ goto out;
+ }
+
+ if (EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, bits) <= 0) {
+ ret = SSH_ERR_KEY_LENGTH;
+ goto out;
+ }
+
+ if (EVP_PKEY_CTX_set1_rsa_keygen_pubexp(ctx, f4) <= 0)
+ goto out;
+
+ if (EVP_PKEY_keygen(ctx, &res) <= 0) {
+ ret = SSH_ERR_LIBCRYPTO_ERROR;
+ goto out;
+ }
+
+ /* This function is deprecated in OpenSSL 3.0 but OpenSSH doesn't worry about it*/
+ *rsap = EVP_PKEY_get1_RSA(res);
+ if (*rsap) {
+ ret = 0;
+ } else {
ret = SSH_ERR_LIBCRYPTO_ERROR;
goto out;
}
- *rsap = private;
- private = NULL;
- ret = 0;
out:
- RSA_free(private);
+ EVP_PKEY_CTX_free(ctx);
+ EVP_PKEY_free(res);
BN_free(f4);
return ret;
}
@@ -1820,7 +1820,8 @@ sshkey_ecdsa_key_to_nid(EC_KEY *k)
static int
ecdsa_generate_private_key(u_int bits, int *nid, EC_KEY **ecdsap)
{
- EC_KEY *private;
+ EVP_PKEY_CTX *ctx = NULL;
+ EVP_PKEY *res = NULL;
int ret = SSH_ERR_INTERNAL_ERROR;
if (nid == NULL || ecdsap == NULL)
@@ -1828,20 +1829,29 @@ ecdsa_generate_private_key(u_int bits, i
if ((*nid = sshkey_ecdsa_bits_to_nid(bits)) == -1)
return SSH_ERR_KEY_LENGTH;
*ecdsap = NULL;
- if ((private = EC_KEY_new_by_curve_name(*nid)) == NULL) {
+
+ if ((ctx = EVP_PKEY_CTX_new_from_name(NULL, "EC", NULL)) == NULL) {
ret = SSH_ERR_ALLOC_FAIL;
goto out;
}
- if (EC_KEY_generate_key(private) != 1) {
+
+ if (EVP_PKEY_keygen_init(ctx) <= 0 || EVP_PKEY_CTX_set_group_name(ctx, OBJ_nid2sn(*nid)) <= 0
+ || EVP_PKEY_keygen(ctx, &res) <= 0) {
+ ret = SSH_ERR_LIBCRYPTO_ERROR;
+ goto out;
+ }
+ /* This function is deprecated in OpenSSL 3.0 but OpenSSH doesn't worry about it*/
+ *ecdsap = EVP_PKEY_get1_EC_KEY(res);
+ if (*ecdsap) {
+ EC_KEY_set_asn1_flag(*ecdsap, OPENSSL_EC_NAMED_CURVE);
+ ret = 0;
+ } else {
ret = SSH_ERR_LIBCRYPTO_ERROR;
goto out;
}
- EC_KEY_set_asn1_flag(private, OPENSSL_EC_NAMED_CURVE);
- *ecdsap = private;
- private = NULL;
- ret = 0;
out:
- EC_KEY_free(private);
+ EVP_PKEY_CTX_free(ctx);
+ EVP_PKEY_free(res);
return ret;
}
# endif /* OPENSSL_HAS_ECC */