Update to OAEP support.

Add OAEP ctrls to retrieve MD and label. Return errors if
an attempt is made to set or retrieve OAEP parameters when
padding mode is not OAEP.

diff --git a/crypto/rsa/rsa.h b/crypto/rsa/rsa.h
index d829cd52c39db2c8e7dad6383a27f38ef08efed6..38771fbafb69940dd5991d3095e5f2656e07ec53 100644 (file)
--- a/crypto/rsa/rsa.h
+++ b/crypto/rsa/rsa.h
@@ -262,10 +262,18 @@ struct rsa_st
                        EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT, \
                                EVP_PKEY_CTRL_GET_RSA_MGF1_MD, 0, (void *)pmd)
 
+#define         EVP_PKEY_CTX_get_rsa_oaep_md(ctx, pmd) \
+               EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,  \
+                               EVP_PKEY_CTRL_GET_RSA_OAEP_MD, 0, (void *)pmd)
+
 #define         EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, l, llen) \
                EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,  \
                                EVP_PKEY_CTRL_RSA_OAEP_LABEL, llen, (void *)l)
 
+#define         EVP_PKEY_CTX_get0_rsa_oaep_label(ctx, l)       \
+               EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,  \
+                               EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL, 0, (void *)l)
+
 #define EVP_PKEY_CTRL_RSA_PADDING      (EVP_PKEY_ALG_CTRL + 1)
 #define EVP_PKEY_CTRL_RSA_PSS_SALTLEN  (EVP_PKEY_ALG_CTRL + 2)
 
@@ -280,6 +288,9 @@ struct rsa_st
 #define EVP_PKEY_CTRL_RSA_OAEP_MD      (EVP_PKEY_ALG_CTRL + 9)
 #define EVP_PKEY_CTRL_RSA_OAEP_LABEL   (EVP_PKEY_ALG_CTRL + 10)
 
+#define EVP_PKEY_CTRL_GET_RSA_OAEP_MD  (EVP_PKEY_ALG_CTRL + 11)
+#define EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL (EVP_PKEY_ALG_CTRL + 12)
+
 #define RSA_PKCS1_PADDING      1
 #define RSA_SSLV23_PADDING     2
 #define RSA_NO_PADDING         3

diff --git a/crypto/rsa/rsa_pmeth.c b/crypto/rsa/rsa_pmeth.c
index 085c73e8985f2318ce4edb251a2be164fc8727ba..ed1eb4922cfee095089affdc04acfeecfed5f114 100644 (file)
--- a/crypto/rsa/rsa_pmeth.c
+++ b/crypto/rsa/rsa_pmeth.c
@@ -520,12 +520,16 @@ static int pkey_rsa_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
                return 1;
 
                case EVP_PKEY_CTRL_RSA_OAEP_MD:
+               case EVP_PKEY_CTRL_GET_RSA_OAEP_MD:
                if (rctx->pad_mode != RSA_PKCS1_OAEP_PADDING)
                        {
                        RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_PADDING_MODE);
-                       return 0;
+                       return -2;
                        }
-               rctx->md = p2;
+               if (type == EVP_PKEY_CTRL_GET_RSA_OAEP_MD)
+                       *(const EVP_MD **)p2 = rctx->md;
+               else
+                       rctx->md = p2;
                return 1;
 
                case EVP_PKEY_CTRL_MD:
@@ -558,11 +562,34 @@ static int pkey_rsa_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
                return 1;
 
                case EVP_PKEY_CTRL_RSA_OAEP_LABEL:
-               OPENSSL_free(rctx->oaep_label);
-               rctx->oaep_label = p2;
-               rctx->oaep_labellen = p1;
+               if (rctx->pad_mode != RSA_PKCS1_OAEP_PADDING)
+                       {
+                       RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_PADDING_MODE);
+                       return -2;
+                       }
+               if (rctx->oaep_label)
+                       OPENSSL_free(rctx->oaep_label);
+               if (p2 && p1 > 0)
+                       {
+                       rctx->oaep_label = p2;
+                       rctx->oaep_labellen = p1;
+                       }
+               else
+                       {
+                       rctx->oaep_label = NULL;
+                       rctx->oaep_labellen = 0;
+                       }
                return 1;
 
+               case EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL:
+               if (rctx->pad_mode != RSA_PKCS1_OAEP_PADDING)
+                       {
+                       RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_PADDING_MODE);
+                       return -2;
+                       }
+               *(unsigned char **)p2 = rctx->oaep_label;
+               return rctx->oaep_labellen;
+
                case EVP_PKEY_CTRL_DIGESTINIT:
                case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
                case EVP_PKEY_CTRL_PKCS7_DECRYPT: