Move CMS signing code out of the algorithms and into CMS

There is a large amount of CMS sepcific code in the algorithms. This is in
the wrong place and breaks layering. This code should be in the CMS layer.

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/13088)

crypto/asn1/x_algor.c

@@ -184,7 +184,7 @@ int x509_algor_md_to_mgf1(X509_ALGOR **palg, const EVP_MD *mgf1md)
  err:
     ASN1_STRING_free(stmp);
     X509_ALGOR_free(algtmp);
-    if (*palg)
+    if (*palg != NULL)
         return 1;
     return 0;
 }

crypto/cms/build.info

@@ -7,6 +7,6 @@ SOURCE[../../libcrypto]= \
 IF[{- !$disabled{dh} -}]
   SOURCE[../../libcrypto]=cms_dh.c
 ENDIF
-IF[{- !$disabled{ed} -}]
-  SOURCE[../../libcrypto]=cms_ecdh.c
-ENDIF
+IF[{- !$disabled{ec} || !$disabled{dsa}-}]
+  SOURCE[../../libcrypto]=cms_ec.c
+ENDIF

crypto/cms/cms_dh.c

@@ -7,7 +7,9 @@
  * https://www.openssl.org/source/license.html
  */
 
+#include <assert.h>
 #include <openssl/cms.h>
+#include <openssl/dh.h>
 #include <openssl/err.h>
 #include <openssl/core_names.h>
 #include "cms_local.h"
@@ -32,9 +34,7 @@ static int dh_cms_set_peerkey(EVP_PKEY_CTX *pctx,
         goto err;
 
     pk = EVP_PKEY_CTX_get0_pkey(pctx);
-    if (pk == NULL)
-        goto err;
-    if (!EVP_PKEY_is_a(pk, "DHX"))
+    if (pk == NULL || !EVP_PKEY_is_a(pk, "DHX"))
         goto err;
 
     /* Get public key */
@@ -85,10 +85,8 @@ static int dh_cms_set_shared_info(EVP_PKEY_CTX *pctx, CMS_RecipientInfo *ri)
         goto err;
     }
 
-    if (EVP_PKEY_CTX_set_dh_kdf_type(pctx, EVP_PKEY_DH_KDF_X9_42) <= 0)
-        goto err;
-
-    if (EVP_PKEY_CTX_set_dh_kdf_md(pctx, EVP_sha1()) <= 0)
+    if (EVP_PKEY_CTX_set_dh_kdf_type(pctx, EVP_PKEY_DH_KDF_X9_42) <= 0
+            || EVP_PKEY_CTX_set_dh_kdf_md(pctx, EVP_sha1()) <= 0)
         goto err;
 
     if (alg->parameter->type != V_ASN1_SEQUENCE)
@@ -139,9 +137,7 @@ static int dh_cms_set_shared_info(EVP_PKEY_CTX *pctx, CMS_RecipientInfo *ri)
 
 static int dh_cms_decrypt(CMS_RecipientInfo *ri)
 {
-    EVP_PKEY_CTX *pctx;
-
-    pctx = CMS_RecipientInfo_get0_pkey_ctx(ri);
+    EVP_PKEY_CTX *pctx = CMS_RecipientInfo_get0_pkey_ctx(ri);
 
     if (pctx == NULL)
         return 0;
@@ -194,8 +190,9 @@ static int dh_cms_encrypt(CMS_RecipientInfo *ri)
     if (!CMS_RecipientInfo_kari_get0_orig_id(ri, &talg, &pubkey,
                                              NULL, NULL, NULL))
         goto err;
-    X509_ALGOR_get0(&aoid, NULL, NULL, talg);
+
     /* Is everything uninitialised? */
+    X509_ALGOR_get0(&aoid, NULL, NULL, talg);
     if (aoid == OBJ_nid2obj(NID_undef)) {
         BIGNUM *bn_pub_key = NULL;
         ASN1_INTEGER *pubk;
@@ -207,8 +204,8 @@ static int dh_cms_encrypt(CMS_RecipientInfo *ri)
         BN_free(bn_pub_key);
         if (pubk == NULL)
             goto err;
-        /* Set the key */
 
+        /* Set the key */
         penclen = i2d_ASN1_INTEGER(pubk, &penc);
         ASN1_INTEGER_free(pubk);
         if (penclen <= 0)
@@ -224,9 +221,7 @@ static int dh_cms_encrypt(CMS_RecipientInfo *ri)
 
     /* See if custom parameters set */
     kdf_type = EVP_PKEY_CTX_get_dh_kdf_type(pctx);
-    if (kdf_type <= 0)
-        goto err;
-    if (!EVP_PKEY_CTX_get_dh_kdf_md(pctx, &kdf_md))
+    if (kdf_type <= 0 || !EVP_PKEY_CTX_get_dh_kdf_md(pctx, &kdf_md))
         goto err;
 
     if (kdf_type == EVP_PKEY_DH_KDF_NONE) {
@@ -312,11 +307,14 @@ static int dh_cms_encrypt(CMS_RecipientInfo *ri)
 
 int cms_dh_envelope(CMS_RecipientInfo *ri, int decrypt)
 {
+    assert(decrypt == 0 || decrypt == 1);
+
     if (decrypt == 1)
         return dh_cms_decrypt(ri);
-    else if (decrypt == 0)
+
+    if (decrypt == 0)
         return dh_cms_encrypt(ri);
 
     CMSerr(0, CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
     return 0;
-}
+}

crypto/cms/cms_env.c

@@ -116,11 +116,17 @@ int cms_env_asn1_ctrl(CMS_RecipientInfo *ri, int cmd)
     } else
         return 0;
 
+#ifndef OPENSSL_NO_DH
     if (EVP_PKEY_is_a(pkey, "DHX"))
         return cms_dh_envelope(ri, cmd);
-    else if (EVP_PKEY_is_a(pkey, "EC"))
+    else
+#endif
+#ifndef OPENSSL_NO_EC
+    if (EVP_PKEY_is_a(pkey, "EC"))
         return cms_ecdh_envelope(ri, cmd);
-    else if (EVP_PKEY_is_a(pkey, "RSA"))
+    else
+#endif
+    if (EVP_PKEY_is_a(pkey, "RSA"))
         return cms_rsa_envelope(ri, cmd);
 
     /* Something else? We'll give engines etc a chance to handle this */

crypto/cms/cms_local.h

@@ -474,6 +474,8 @@ int ess_check_signing_certs(CMS_SignerInfo *si, STACK_OF(X509) *chain);
 int cms_dh_envelope(CMS_RecipientInfo *ri, int decrypt);
 int cms_ecdh_envelope(CMS_RecipientInfo *ri, int decrypt);
 int cms_rsa_envelope(CMS_RecipientInfo *ri, int decrypt);
+int cms_ecdsa_dsa_sign(CMS_SignerInfo *si, int verify);
+int cms_rsa_sign(CMS_SignerInfo *si, int verify);
 
 DECLARE_ASN1_ITEM(CMS_CertificateChoices)
 DECLARE_ASN1_ITEM(CMS_DigestedData)

crypto/cms/cms_rsa.c

@@ -7,12 +7,13 @@
  * https://www.openssl.org/source/license.html
  */
 
+#include <assert.h>
 #include <openssl/cms.h>
 #include <openssl/err.h>
 #include "crypto/asn1.h"
+#include "crypto/rsa.h"
 #include "cms_local.h"
 
-
 static RSA_OAEP_PARAMS *rsa_oaep_decode(const X509_ALGOR *alg)
 {
     RSA_OAEP_PARAMS *oaep;
@@ -118,7 +119,7 @@ static int rsa_cms_encrypt(CMS_RecipientInfo *ri)
 
     if (CMS_RecipientInfo_ktri_get0_algs(ri, NULL, NULL, &alg) <= 0)
         return 0;
-    if (pkctx) {
+    if (pkctx != NULL) {
         if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0)
             return 0;
     }
@@ -145,6 +146,7 @@ static int rsa_cms_encrypt(CMS_RecipientInfo *ri)
         goto err;
     if (labellen > 0) {
         ASN1_OCTET_STRING *los;
+
         oaep->pSourceFunc = X509_ALGOR_new();
         if (oaep->pSourceFunc == NULL)
             goto err;
@@ -172,11 +174,80 @@ static int rsa_cms_encrypt(CMS_RecipientInfo *ri)
 
 int cms_rsa_envelope(CMS_RecipientInfo *ri, int decrypt)
 {
+    assert(decrypt == 0 || decrypt == 1);
+
     if (decrypt == 1)
         return rsa_cms_decrypt(ri);
-    else if (decrypt == 0)
+
+    if (decrypt == 0)
         return rsa_cms_encrypt(ri);
 
     CMSerr(0, CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
     return 0;
-}
+}
+
+static int rsa_cms_sign(CMS_SignerInfo *si)
+{
+    int pad_mode = RSA_PKCS1_PADDING;
+    X509_ALGOR *alg;
+    EVP_PKEY_CTX *pkctx = CMS_SignerInfo_get0_pkey_ctx(si);
+    ASN1_STRING *os = NULL;
+
+    CMS_SignerInfo_get0_algs(si, NULL, NULL, NULL, &alg);
+    if (pkctx != NULL) {
+        if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0)
+            return 0;
+    }
+    if (pad_mode == RSA_PKCS1_PADDING) {
+        X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), V_ASN1_NULL, 0);
+        return 1;
+    }
+    /* We don't support it */
+    if (pad_mode != RSA_PKCS1_PSS_PADDING)
+        return 0;
+    os = ossl_rsa_ctx_to_pss_string(pkctx);
+    if (os == NULL)
+        return 0;
+    X509_ALGOR_set0(alg, OBJ_nid2obj(EVP_PKEY_RSA_PSS), V_ASN1_SEQUENCE, os);
+    return 1;
+}
+
+static int rsa_cms_verify(CMS_SignerInfo *si)
+{
+    int nid, nid2;
+    X509_ALGOR *alg;
+    EVP_PKEY_CTX *pkctx = CMS_SignerInfo_get0_pkey_ctx(si);
+    EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(pkctx);
+
+    CMS_SignerInfo_get0_algs(si, NULL, NULL, NULL, &alg);
+    nid = OBJ_obj2nid(alg->algorithm);
+    if (nid == EVP_PKEY_RSA_PSS)
+        return ossl_rsa_pss_to_ctx(NULL, pkctx, alg, NULL);
+    /* Only PSS allowed for PSS keys */
+    if (EVP_PKEY_is_a(pkey, "RSA-PSS")) {
+        RSAerr(RSA_F_RSA_CMS_VERIFY, RSA_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE);
+        return 0;
+    }
+    if (nid == NID_rsaEncryption)
+        return 1;
+    /* Workaround for some implementation that use a signature OID */
+    if (OBJ_find_sigid_algs(nid, NULL, &nid2)) {
+        if (nid2 == NID_rsaEncryption)
+            return 1;
+    }
+    return 0;
+}
+
+int cms_rsa_sign(CMS_SignerInfo *si, int verify)
+{
+    assert(verify == 0 || verify == 1);
+
+    if (verify == 1)
+        return rsa_cms_verify(si);
+
+    if (verify == 0)
+        return rsa_cms_sign(si);
+
+    CMSerr(0, CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
+    return 0;
+}

crypto/cms/cms_sd.c

@@ -233,6 +233,15 @@ static int cms_sd_asn1_ctrl(CMS_SignerInfo *si, int cmd)
     EVP_PKEY *pkey = si->pkey;
     int i;
 
+#if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_EC)
+    if (EVP_PKEY_is_a(pkey, "DSA") || EVP_PKEY_is_a(pkey, "EC"))
+        return cms_ecdsa_dsa_sign(si, cmd);
+    else
+#endif
+    if (EVP_PKEY_is_a(pkey, "RSA") || EVP_PKEY_is_a(pkey, "RSA-PSS"))
+        return cms_rsa_sign(si, cmd);
+
+    /* Something else? We'll give engines etc a chance to handle this */
     if (pkey->ameth == NULL || pkey->ameth->pkey_ctrl == NULL)
         return 1;
     i = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_CMS_SIGN, cmd, si);

crypto/dsa/dsa_ameth.c

@@ -482,22 +482,6 @@ static int dsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
         }
         return 1;
 #ifndef OPENSSL_NO_CMS
-    case ASN1_PKEY_CTRL_CMS_SIGN:
-        if (arg1 == 0) {
-            int snid, hnid;
-            X509_ALGOR *alg1, *alg2;
-            CMS_SignerInfo_get0_algs(arg2, NULL, NULL, &alg1, &alg2);
-            if (alg1 == NULL || alg1->algorithm == NULL)
-                return -1;
-            hnid = OBJ_obj2nid(alg1->algorithm);
-            if (hnid == NID_undef)
-                return -1;
-            if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_id(pkey)))
-                return -1;
-            X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0);
-        }
-        return 1;
-
     case ASN1_PKEY_CTRL_CMS_RI_TYPE:
         *(int *)arg2 = CMS_RECIPINFO_NONE;
         return 1;

crypto/ec/ec_ameth.c

@@ -490,22 +490,6 @@ static int ec_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
         }
         return 1;
 #ifndef OPENSSL_NO_CMS
-    case ASN1_PKEY_CTRL_CMS_SIGN:
-        if (arg1 == 0) {
-            int snid, hnid;
-            X509_ALGOR *alg1, *alg2;
-            CMS_SignerInfo_get0_algs(arg2, NULL, NULL, &alg1, &alg2);
-            if (alg1 == NULL || alg1->algorithm == NULL)
-                return -1;
-            hnid = OBJ_obj2nid(alg1->algorithm);
-            if (hnid == NID_undef)
-                return -1;
-            if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_id(pkey)))
-                return -1;
-            X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0);
-        }
-        return 1;
-
     case ASN1_PKEY_CTRL_CMS_RI_TYPE:
         *(int *)arg2 = CMS_RECIPINFO_AGREE;
         return 1;

crypto/rsa/rsa_ameth.c

@@ -26,11 +26,6 @@
 #include "crypto/rsa.h"
 #include "rsa_local.h"
 
-#ifndef OPENSSL_NO_CMS
-static int rsa_cms_sign(CMS_SignerInfo *si);
-static int rsa_cms_verify(CMS_SignerInfo *si);
-#endif
-
 static RSA_PSS_PARAMS *rsa_pss_decode(const X509_ALGOR *alg);
 static int rsa_sync_to_pss_params_30(RSA *rsa);
 
@@ -511,13 +506,6 @@ static int rsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
             PKCS7_RECIP_INFO_get0_alg(arg2, &alg);
         break;
 #ifndef OPENSSL_NO_CMS
-    case ASN1_PKEY_CTRL_CMS_SIGN:
-        if (arg1 == 0)
-            return rsa_cms_sign(arg2);
-        else if (arg1 == 1)
-            return rsa_cms_verify(arg2);
-        break;
-
     case ASN1_PKEY_CTRL_CMS_RI_TYPE:
         if (pkey_is_pss(pkey))
             return -2;
@@ -560,7 +548,6 @@ static RSA_PSS_PARAMS *rsa_ctx_to_pss(EVP_PKEY_CTX *pkctx)
 {
     const EVP_MD *sigmd, *mgf1md;
     EVP_PKEY *pk = EVP_PKEY_CTX_get0_pkey(pkctx);
-    RSA *rsa = EVP_PKEY_get0_RSA(pk);
     int saltlen;
 
     if (EVP_PKEY_CTX_get_signature_md(pkctx, &sigmd) <= 0)
@@ -572,7 +559,7 @@ static RSA_PSS_PARAMS *rsa_ctx_to_pss(EVP_PKEY_CTX *pkctx)
     if (saltlen == -1) {
         saltlen = EVP_MD_size(sigmd);
     } else if (saltlen == -2 || saltlen == -3) {
-        saltlen = RSA_size(rsa) - EVP_MD_size(sigmd) - 2;
+        saltlen = EVP_PKEY_size(pk) - EVP_MD_size(sigmd) - 2;
         if ((EVP_PKEY_bits(pk) & 0x7) == 1)
             saltlen--;
         if (saltlen < 0)
@@ -610,7 +597,7 @@ RSA_PSS_PARAMS *rsa_pss_params_create(const EVP_MD *sigmd,
     return NULL;
 }
 
-static ASN1_STRING *rsa_ctx_to_pss_string(EVP_PKEY_CTX *pkctx)
+ASN1_STRING *ossl_rsa_ctx_to_pss_string(EVP_PKEY_CTX *pkctx)
 {
     RSA_PSS_PARAMS *pss = rsa_ctx_to_pss(pkctx);
     ASN1_STRING *os;
@@ -629,8 +616,8 @@ static ASN1_STRING *rsa_ctx_to_pss_string(EVP_PKEY_CTX *pkctx)
  * passed to pkctx instead.
  */
 
-static int rsa_pss_to_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pkctx,
-                          const X509_ALGOR *sigalg, EVP_PKEY *pkey)
+int ossl_rsa_pss_to_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pkctx,
+                        const X509_ALGOR *sigalg, EVP_PKEY *pkey)
 {
     int rv = -1;
     int saltlen;
@@ -639,14 +626,14 @@ static int rsa_pss_to_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pkctx,
 
     /* Sanity check: make sure it is PSS */
     if (OBJ_obj2nid(sigalg->algorithm) != EVP_PKEY_RSA_PSS) {
-        RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_R_UNSUPPORTED_SIGNATURE_TYPE);
+        RSAerr(0, RSA_R_UNSUPPORTED_SIGNATURE_TYPE);
         return -1;
     }
     /* Decode PSS parameters */
     pss = rsa_pss_decode(sigalg);
 
     if (!rsa_pss_get_param(pss, &md, &mgf1md, &saltlen)) {
-        RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_R_INVALID_PSS_PARAMETERS);
+        RSAerr(0, RSA_R_INVALID_PSS_PARAMETERS);
         goto err;
     }
 
@@ -659,7 +646,7 @@ static int rsa_pss_to_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pkctx,
         if (EVP_PKEY_CTX_get_signature_md(pkctx, &checkmd) <= 0)
             goto err;
         if (EVP_MD_type(md) != EVP_MD_type(checkmd)) {
-            RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_R_DIGEST_DOES_NOT_MATCH);
+            RSAerr(0, RSA_R_DIGEST_DOES_NOT_MATCH);
             goto err;
         }
     }
@@ -780,33 +767,6 @@ static int rsa_sync_to_pss_params_30(RSA *rsa)
     return 1;
 }
 
-#ifndef OPENSSL_NO_CMS
-static int rsa_cms_verify(CMS_SignerInfo *si)
-{
-    int nid, nid2;
-    X509_ALGOR *alg;
-    EVP_PKEY_CTX *pkctx = CMS_SignerInfo_get0_pkey_ctx(si);
-
-    CMS_SignerInfo_get0_algs(si, NULL, NULL, NULL, &alg);
-    nid = OBJ_obj2nid(alg->algorithm);
-    if (nid == EVP_PKEY_RSA_PSS)
-        return rsa_pss_to_ctx(NULL, pkctx, alg, NULL);
-    /* Only PSS allowed for PSS keys */
-    if (pkey_ctx_is_pss(pkctx)) {
-        RSAerr(RSA_F_RSA_CMS_VERIFY, RSA_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE);
-        return 0;
-    }
-    if (nid == NID_rsaEncryption)
-        return 1;
-    /* Workaround for some implementation that use a signature OID */
-    if (OBJ_find_sigid_algs(nid, NULL, &nid2)) {
-        if (nid2 == NID_rsaEncryption)
-            return 1;
-    }
-    return 0;
-}
-#endif
-
 /*
  * Customised RSA item verification routine. This is called when a signature
  * is encountered requiring special handling. We currently only handle PSS.
@@ -821,41 +781,13 @@ static int rsa_item_verify(EVP_MD_CTX *ctx, const ASN1_ITEM *it,
         RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNSUPPORTED_SIGNATURE_TYPE);
         return -1;
     }
-    if (rsa_pss_to_ctx(ctx, NULL, sigalg, pkey) > 0) {
+    if (ossl_rsa_pss_to_ctx(ctx, NULL, sigalg, pkey) > 0) {
         /* Carry on */
         return 2;
     }
     return -1;
 }
 
-#ifndef OPENSSL_NO_CMS
-static int rsa_cms_sign(CMS_SignerInfo *si)
-{
-    int pad_mode = RSA_PKCS1_PADDING;
-    X509_ALGOR *alg;
-    EVP_PKEY_CTX *pkctx = CMS_SignerInfo_get0_pkey_ctx(si);
-    ASN1_STRING *os = NULL;
-
-    CMS_SignerInfo_get0_algs(si, NULL, NULL, NULL, &alg);
-    if (pkctx) {
-        if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0)
-            return 0;
-    }
-    if (pad_mode == RSA_PKCS1_PADDING) {
-        X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), V_ASN1_NULL, 0);
-        return 1;
-    }
-    /* We don't support it */
-    if (pad_mode != RSA_PKCS1_PSS_PADDING)
-        return 0;
-    os = rsa_ctx_to_pss_string(pkctx);
-    if (!os)
-        return 0;
-    X509_ALGOR_set0(alg, OBJ_nid2obj(EVP_PKEY_RSA_PSS), V_ASN1_SEQUENCE, os);
-    return 1;
-}
-#endif
-
 static int rsa_item_sign(EVP_MD_CTX *ctx, const ASN1_ITEM *it, const void *asn,
                          X509_ALGOR *alg1, X509_ALGOR *alg2,
                          ASN1_BIT_STRING *sig)
@@ -869,7 +801,7 @@ static int rsa_item_sign(EVP_MD_CTX *ctx, const ASN1_ITEM *it, const void *asn,
         return 2;
     if (pad_mode == RSA_PKCS1_PSS_PADDING) {
         ASN1_STRING *os1 = NULL;
-        os1 = rsa_ctx_to_pss_string(pkctx);
+        os1 = ossl_rsa_ctx_to_pss_string(pkctx);
         if (!os1)
             return 0;
         /* Duplicate parameters if we have to */

include/crypto/asn1.h

@@ -137,4 +137,4 @@ int asn1_type_get_octetstring_int(const ASN1_TYPE *a, long *num,
 int x509_algor_new_from_md(X509_ALGOR **palg, const EVP_MD *md);
 const EVP_MD *x509_algor_get_md(X509_ALGOR *alg);
 X509_ALGOR *x509_algor_mgf1_decode(X509_ALGOR *alg);
-int x509_algor_md_to_mgf1(X509_ALGOR **palg, const EVP_MD *mgf1md);
+int x509_algor_md_to_mgf1(X509_ALGOR **palg, const EVP_MD *mgf1md);

include/crypto/rsa.h

@@ -93,6 +93,10 @@ extern const char *ossl_rsa_mp_factor_names[];
 extern const char *ossl_rsa_mp_exp_names[];
 extern const char *ossl_rsa_mp_coeff_names[];
 
+ASN1_STRING *ossl_rsa_ctx_to_pss_string(EVP_PKEY_CTX *pkctx);
+int ossl_rsa_pss_to_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pkctx,
+                        const X509_ALGOR *sigalg, EVP_PKEY *pkey);
+
 # if defined(FIPS_MODULE) && !defined(OPENSSL_NO_ACVP_TESTS)
 int rsa_acvp_test_gen_params_new(OSSL_PARAM **dst, const OSSL_PARAM src[]);
 void rsa_acvp_test_gen_params_free(OSSL_PARAM *dst);