From e5828cd46f0217427e2232ebb80511827bfe7d15 Mon Sep 17 00:00:00 2001
From: Richard Levitte <levitte@openssl.org>
Date: Mon, 6 Nov 2000 23:15:03 +0000
Subject: [PATCH] Constify the RSAref glue code.

---
 rsaref/rsaref.c | 35 ++++++++++++++++++-----------------
 rsaref/rsaref.h | 15 ++++++++++-----
 2 files changed, 28 insertions(+), 22 deletions(-)

diff --git a/rsaref/rsaref.c b/rsaref/rsaref.c
index ae70feb3e9..9bd596d8c2 100644
--- a/rsaref/rsaref.c
+++ b/rsaref/rsaref.c
@@ -66,21 +66,22 @@
 
 static int RSAref_bn2bin(BIGNUM * from, unsigned char* to, int max);
 #ifdef undef
-static BIGNUM* RSAref_bin2bn(unsigned char* from, BIGNUM * to, int max);
+static BIGNUM* RSAref_bin2bn(const unsigned char* from, BIGNUM * to, int max);
 #endif
 static int RSAref_Public_eay2ref(RSA * from, RSArefPublicKey * to);
 static int RSAref_Private_eay2ref(RSA * from, RSArefPrivateKey * to);
-int RSA_ref_private_decrypt(int len, unsigned char *from,
+int RSA_ref_private_decrypt(int len, const unsigned char *from,
 	unsigned char *to, RSA *rsa, int padding);
-int RSA_ref_private_encrypt(int len, unsigned char *from,
+int RSA_ref_private_encrypt(int len, const unsigned char *from,
 	unsigned char *to, RSA *rsa, int padding);
-int RSA_ref_public_encrypt(int len, unsigned char *from,
+int RSA_ref_public_encrypt(int len, const unsigned char *from,
 	unsigned char *to, RSA *rsa, int padding);
-int RSA_ref_public_decrypt(int len, unsigned char *from,
+int RSA_ref_public_decrypt(int len, const unsigned char *from,
 	unsigned char *to, RSA *rsa, int padding);
-static int BN_ref_mod_exp(BIGNUM *r,BIGNUM *a,const BIGNUM *p,const BIGNUM *m,
+static int BN_ref_mod_exp(BIGNUM *r,const BIGNUM *a,
+			  const BIGNUM *p,const BIGNUM *m,
 			  BN_CTX *ctx, BN_MONT_CTX *m_ctx);
-static int RSA_ref_mod_exp(BIGNUM *r0, BIGNUM *I, RSA *rsa);
+static int RSA_ref_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa);
 static RSA_METHOD rsa_pkcs1_ref_meth={
 	"RSAref PKCS#1 RSA",
 	RSA_ref_public_encrypt,
@@ -100,13 +101,13 @@ RSA_METHOD *RSA_PKCS1_RSAref(void)
 	return(&rsa_pkcs1_ref_meth);
 	}
 
-static int RSA_ref_mod_exp(BIGNUM *r0, BIGNUM *I, RSA *rsa)
+static int RSA_ref_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa)
 	{
 	RSAREFerr(RSAREF_F_RSA_REF_MOD_EXP,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
 	return(0);
 	}
 
-static int BN_ref_mod_exp(BIGNUM *r, BIGNUM *a, const BIGNUM *p,
+static int BN_ref_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
 			  const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
 	{
 	RSAREFerr(RSAREF_F_BN_REF_MOD_EXP,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
@@ -201,8 +202,8 @@ static int RSAref_Private_eay2ref(RSA *from, RSArefPrivateKey *to)
 	return(1);
 	}
 
-int RSA_ref_private_decrypt(int len, unsigned char *from, unsigned char *to,
-	     RSA *rsa, int padding)
+int RSA_ref_private_decrypt(int len, const unsigned char *from,
+	unsigned char *to, RSA *rsa, int padding)
 	{
 	int i,outlen= -1;
 	RSArefPrivateKey RSAkey;
@@ -219,8 +220,8 @@ err:
 	return(outlen);
 	}
 
-int RSA_ref_private_encrypt(int len, unsigned char *from, unsigned char *to,
-	     RSA *rsa, int padding)
+int RSA_ref_private_encrypt(int len, const unsigned char *from,
+	unsigned char *to, RSA *rsa, int padding)
 	{
 	int i,outlen= -1;
 	RSArefPrivateKey RSAkey;
@@ -242,8 +243,8 @@ err:
 	return(outlen);
 	}
 
-int RSA_ref_public_decrypt(int len, unsigned char *from, unsigned char *to,
-	     RSA *rsa, int padding)
+int RSA_ref_public_decrypt(int len, const unsigned char *from,
+	unsigned char *to, RSA *rsa, int padding)
 	{
 	int i,outlen= -1;
 	RSArefPublicKey RSAkey;
@@ -260,8 +261,8 @@ err:
 	return(outlen);
 	}
 
-int RSA_ref_public_encrypt(int len, unsigned char *from, unsigned char *to,
-	     RSA *rsa, int padding)
+int RSA_ref_public_encrypt(int len, const unsigned char *from,
+	unsigned char *to, RSA *rsa, int padding)
 	{
 	int outlen= -1;
 	int i;
diff --git a/rsaref/rsaref.h b/rsaref/rsaref.h
index 498449f40e..427ef773d8 100644
--- a/rsaref/rsaref.h
+++ b/rsaref/rsaref.h
@@ -118,17 +118,22 @@ typedef struct RSARandomState_st
 #define RE_SIGNATURE_ENCODING 0x040c
 #define RE_ENCRYPTION_ALGORITHM 0x040d
 
-int RSAPrivateDecrypt(unsigned char *to, int *outlen, unsigned char *from,
+int RSAPrivateDecrypt(unsigned char *to, int *outlen,
+	const unsigned char *from,
 	int len, RSArefPrivateKey *RSAkey);
-int RSAPrivateEncrypt(unsigned char *to, int *outlen, unsigned char *from,
+int RSAPrivateEncrypt(unsigned char *to, int *outlen,
+	const unsigned char *from,
 	int len, RSArefPrivateKey *RSAkey);
-int RSAPublicDecrypt(unsigned char *to, int *outlen, unsigned char *from,
+int RSAPublicDecrypt(unsigned char *to, int *outlen,
+	const unsigned char *from,
 	int len, RSArefPublicKey *RSAkey);
-int RSAPublicEncrypt(unsigned char *to, int *outlen, unsigned char *from,
+int RSAPublicEncrypt(unsigned char *to, int *outlen,
+	const unsigned char *from,
 	int len, RSArefPublicKey *RSAkey,RSARandomState *rnd);
 int R_RandomInit(RSARandomState *rnd);
 int R_GetRandomBytesNeeded(unsigned int *,RSARandomState *rnd);
-int R_RandomUpdate(RSARandomState *rnd, unsigned char *data, unsigned int n);
+int R_RandomUpdate(RSARandomState *rnd,
+	const unsigned char *data, unsigned int n);
 int R_RandomFinal(RSARandomState *rnd);
 
 void ERR_load_RSAREF_strings(void );
-- 
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