Gather printing routines into EVP_PKEY_ASN1_METHOD.

1 files changed, 97 insertions, 2 deletions

diff --git a/crypto/rsa/rsa_ameth.c b/crypto/rsa/rsa_ameth.c
index 370e3d28c7..287098029c 100644
--- a/crypto/rsa/rsa_ameth.c
+++ b/crypto/rsa/rsa_ameth.c
@@ -153,6 +153,101 @@ static void int_rsa_free(EVP_PKEY *pkey)
 	RSA_free(pkey->pkey.rsa);
 	}
 
+
+static void update_buflen(const BIGNUM *b, size_t *pbuflen)
+	{
+	int i;
+	if (!b)
+		return;
+	if (*pbuflen < (i = (size_t)BN_num_bytes(b)))
+			*pbuflen = i;
+	}
+
+static int do_rsa_print(BIO *bp, const RSA *x, int off, int priv)
+	{
+	char *str;
+	const char *s;
+	unsigned char *m=NULL;
+	int ret=0, mod_len = 0;
+	size_t buf_len=0;
+
+	update_buflen(x->n, &buf_len);
+	update_buflen(x->e, &buf_len);
+
+	if (priv)
+		{
+		update_buflen(x->d, &buf_len);
+		update_buflen(x->p, &buf_len);
+		update_buflen(x->q, &buf_len);
+		update_buflen(x->dmp1, &buf_len);
+		update_buflen(x->dmq1, &buf_len);
+		update_buflen(x->iqmp, &buf_len);
+		}
+
+	m=(unsigned char *)OPENSSL_malloc(buf_len+10);
+	if (m == NULL)
+		{
+		RSAerr(RSA_F_RSA_PRINT,ERR_R_MALLOC_FAILURE);
+		goto err;
+		}
+
+	if (x->n != NULL)
+		mod_len = BN_num_bits(x->n);
+
+	if(!BIO_indent(bp,off,128))
+		goto err;
+
+	if (priv && x->d)
+		{
+		if (BIO_printf(bp,"Private-Key: (%d bit)\n", mod_len)
+			<= 0) goto err;
+		str = "modulus:";
+		s = "publicExponent:";
+		}
+	else
+		{
+		if (BIO_printf(bp,"Public-Key: (%d bit)\n", mod_len)
+			<= 0) goto err;
+		str = "Modulus:";
+		s= "Exponent:";
+		}
+	if (!ASN1_bn_print(bp,str,x->n,m,off)) goto err;
+	if (!ASN1_bn_print(bp,s,x->e,m,off))
+		goto err;
+	if (priv)
+		{
+		if (!ASN1_bn_print(bp,"privateExponent:",x->d,m,off))
+			goto err;
+		if (!ASN1_bn_print(bp,"prime1:",x->p,m,off))
+			goto err;
+		if (!ASN1_bn_print(bp,"prime2:",x->q,m,off))
+			goto err;
+		if (!ASN1_bn_print(bp,"exponent1:",x->dmp1,m,off))
+			goto err;
+		if (!ASN1_bn_print(bp,"exponent2:",x->dmq1,m,off))
+			goto err;
+		if (!ASN1_bn_print(bp,"coefficient:",x->iqmp,m,off))
+			goto err;
+		}
+	ret=1;
+err:
+	if (m != NULL) OPENSSL_free(m);
+	return(ret);
+	}
+
+static int rsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent,
+							ASN1_PCTX *ctx)
+	{
+	return do_rsa_print(bp, pkey->pkey.rsa, indent, 0);
+	}
+
+
+static int rsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent,
+							ASN1_PCTX *ctx)
+	{
+	return do_rsa_print(bp, pkey->pkey.rsa, indent, 1);
+	}
+
 const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[] = 
 	{
 		{
@@ -163,11 +258,11 @@ const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[] =
 		rsa_pub_decode,
 		rsa_pub_encode,
 		rsa_pub_cmp,
-		0,
+		rsa_pub_print,
 
 		rsa_priv_decode,
 		rsa_priv_encode,
-		0,
+		rsa_priv_print,
 
 		int_rsa_size,
 		rsa_bits,