Add RSA ctrl for padding mode, add ctrl support in pkeyutl.

4 files changed, 59 insertions, 2 deletions

diff --git a/crypto/evp/evp.h b/crypto/evp/evp.h
index 06535510ca..07bcb50ad0 100644
--- a/crypto/evp/evp.h
+++ b/crypto/evp/evp.h
@@ -917,8 +917,11 @@ void EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD *ameth,
 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type, ENGINE *e);
 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey);
 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx);
+
 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
 				int cmd, int p1, void *p2);
+int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx, const char *type,
+						const char *value);
 
 
 int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx);
diff --git a/crypto/evp/pmeth_lib.c b/crypto/evp/pmeth_lib.c
index 9ca351a53e..7c36395696 100644
--- a/crypto/evp/pmeth_lib.c
+++ b/crypto/evp/pmeth_lib.c
@@ -171,7 +171,8 @@ int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
 
 	}
 
-int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx, char *name, char *value)
+int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
+					const char *name, const char *value)
 	{
 	if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl)
 		{
diff --git a/crypto/rsa/rsa.h b/crypto/rsa/rsa.h
index 6a9062b27e..2b03ede5fd 100644
--- a/crypto/rsa/rsa.h
+++ b/crypto/rsa/rsa.h
@@ -192,6 +192,12 @@ struct rsa_st
                                                 * be used for all exponents.
                                                 */
 
+#define EVP_PKEY_CTX_set_rsa_padding(ctx, pad) \
+	EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_CTRL_RSA_PADDING, \
+				pad, NULL)
+
+#define EVP_PKEY_CTRL_RSA_PADDING	1
+
 #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 7fe9e52a7d..5401b0544a 100644
--- a/crypto/rsa/rsa_pmeth.c
+++ b/crypto/rsa/rsa_pmeth.c
@@ -151,6 +151,52 @@ static int pkey_rsa_decrypt(EVP_PKEY_CTX *ctx, unsigned char *out, int *outlen,
 	return 1;
 	}
 
+static int pkey_rsa_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
+	{
+	RSA_PKEY_CTX *rctx = ctx->data;
+	switch (type)
+		{
+
+		case EVP_PKEY_CTRL_RSA_PADDING:
+		/* TODO: add PSS support */
+		if ((p1 >= RSA_PKCS1_PADDING) && (p1 <= RSA_X931_PADDING))
+			{
+			rctx->pad_mode = p1;
+			return 1;
+			}
+		return 0;
+
+		default:
+		return -2;
+
+		}
+	}
+			
+static int pkey_rsa_ctrl_str(EVP_PKEY_CTX *ctx,
+			const char *type, const char *value)
+	{
+	if (!strcmp(type, "rsa_padding_mode"))
+		{
+		int pm;
+		if (!value)
+			return 0;
+		if (!strcmp(value, "pkcs1"))
+			pm = RSA_PKCS1_PADDING;
+		else if (!strcmp(value, "sslv23"))
+			pm = RSA_SSLV23_PADDING;
+		else if (!strcmp(value, "none"))
+			pm = RSA_NO_PADDING;
+		else if (!strcmp(value, "oeap"))
+			pm = RSA_PKCS1_OAEP_PADDING;
+		else if (!strcmp(value, "x931"))
+			pm = RSA_X931_PADDING;
+		else
+			return -2;
+		return pkey_rsa_ctrl(ctx, EVP_PKEY_CTRL_RSA_PADDING, pm, NULL);
+		}
+	return -2;
+	}
+
 const EVP_PKEY_METHOD rsa_pkey_meth = 
 	{
 	EVP_PKEY_RSA,
@@ -179,7 +225,8 @@ const EVP_PKEY_METHOD rsa_pkey_meth =
 	0,
 	pkey_rsa_decrypt,
 
-	0,0
+	pkey_rsa_ctrl,
+	pkey_rsa_ctrl_str
 
 
 	};