From db98bbc1144cb7ac412562a54aaba0e4d2cde080 Mon Sep 17 00:00:00 2001
From: "Dr. Stephen Henson" <steve@openssl.org>
Date: Fri, 24 Mar 2006 13:46:58 +0000
Subject: Initial support for generalized public key parameters.

---
 crypto/pem/pem.h      |  2 ++
 crypto/pem/pem_err.c  |  1 +
 crypto/pem/pem_pkey.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 57 insertions(+)

(limited to 'crypto/pem')

diff --git a/crypto/pem/pem.h b/crypto/pem/pem.h
index f2c5f329ad..b273007c0e 100644
--- a/crypto/pem/pem.h
+++ b/crypto/pem/pem.h
@@ -133,6 +133,7 @@ extern "C" {
 #define PEM_STRING_ECDSA_PUBLIC "ECDSA PUBLIC KEY"
 #define PEM_STRING_ECPARAMETERS "EC PARAMETERS"
 #define PEM_STRING_ECPRIVATEKEY	"EC PRIVATE KEY"
+#define PEM_STRING_PARAMETERS	"PARAMETERS"
 
   /* Note that this structure is initialised by PEM_SealInit and cleaned up
      by PEM_SealFinal (at least for now) */
@@ -724,6 +725,7 @@ void ERR_load_PEM_strings(void);
 #define PEM_F_PEM_PK8PKEY				 119
 #define PEM_F_PEM_READ					 108
 #define PEM_F_PEM_READ_BIO				 109
+#define PEM_F_PEM_READ_BIO_PARAMETERS			 140
 #define PEM_F_PEM_READ_BIO_PRIVATEKEY			 123
 #define PEM_F_PEM_READ_PRIVATEKEY			 124
 #define PEM_F_PEM_SEALFINAL				 110
diff --git a/crypto/pem/pem_err.c b/crypto/pem/pem_err.c
index c43585564b..d3352080e1 100644
--- a/crypto/pem/pem_err.c
+++ b/crypto/pem/pem_err.c
@@ -98,6 +98,7 @@ static ERR_STRING_DATA PEM_str_functs[]=
 {ERR_FUNC(PEM_F_PEM_PK8PKEY),	"PEM_PK8PKEY"},
 {ERR_FUNC(PEM_F_PEM_READ),	"PEM_read"},
 {ERR_FUNC(PEM_F_PEM_READ_BIO),	"PEM_read_bio"},
+{ERR_FUNC(PEM_F_PEM_READ_BIO_PARAMETERS),	"PEM_READ_BIO_PARAMETERS"},
 {ERR_FUNC(PEM_F_PEM_READ_BIO_PRIVATEKEY),	"PEM_READ_BIO_PRIVATEKEY"},
 {ERR_FUNC(PEM_F_PEM_READ_PRIVATEKEY),	"PEM_READ_PRIVATEKEY"},
 {ERR_FUNC(PEM_F_PEM_SEALFINAL),	"PEM_SealFinal"},
diff --git a/crypto/pem/pem_pkey.c b/crypto/pem/pem_pkey.c
index aea826e04e..b9067e0745 100644
--- a/crypto/pem/pem_pkey.c
+++ b/crypto/pem/pem_pkey.c
@@ -149,6 +149,60 @@ int PEM_write_bio_PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
 				pem_str,bp,(char *)x,enc,kstr,klen,cb,u);
 	}
 
+EVP_PKEY *PEM_read_bio_Parameters(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u)
+	{
+	char *nm=NULL;
+	const unsigned char *p=NULL;
+	unsigned char *data=NULL;
+	long len;
+	int slen;
+	EVP_PKEY *ret=NULL;
+
+	if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_PARAMETERS,
+								bp, cb, u))
+		return NULL;
+	p = data;
+
+	if ((slen = pem_check_suffix(nm, "PARAMETERS")) > 0)
+		{
+		const EVP_PKEY_ASN1_METHOD *ameth;
+		ameth = EVP_PKEY_asn1_find_str(nm, slen);
+		if (!ameth || !ameth->param_decode)
+			goto err;
+		ret = EVP_PKEY_new();
+		if (!ret)
+			goto err;
+		if (!ameth->param_decode(ret, &p, len))
+			{
+			EVP_PKEY_free(ret);
+			ret = NULL;
+			goto err;
+			}
+		if(x)
+			{
+			if(*x) EVP_PKEY_free((EVP_PKEY *)*x);
+			*x = ret;
+			}
+		}
+err:
+	if (ret == NULL)
+		PEMerr(PEM_F_PEM_READ_BIO_PARAMETERS,ERR_R_ASN1_LIB);
+	OPENSSL_free(nm);
+	OPENSSL_free(data);
+	return(ret);
+	}
+
+int PEM_write_bio_Paramters(BIO *bp, EVP_PKEY *x)
+	{
+	char pem_str[80];
+	if (!x->ameth || !x->ameth->param_encode)
+		return 0;
+
+	BIO_snprintf(pem_str, 80, "%s PARAMETERS", x->ameth->pem_str);
+	return PEM_ASN1_write_bio(
+		(i2d_of_void *)openssl_fcast(x->ameth->param_encode),
+				pem_str,bp,(char *)x,NULL,NULL,0,0,NULL);
+	}
 
 #ifndef OPENSSL_NO_FP_API
 EVP_PKEY *PEM_read_PrivateKey(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u)
-- 
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