check return value

[openssl.git] / crypto / evp / p5_crpt2.c

diff --git a/crypto/evp/p5_crpt2.c b/crypto/evp/p5_crpt2.c
index b161d7664afc0fbf7345a772afe0e2d7dec23819..f2e143d2a68c2e6472d9c3cd97d45ca28cfbe6f9 100644 (file)
--- a/crypto/evp/p5_crpt2.c
+++ b/crypto/evp/p5_crpt2.c
@@ -77,7 +77,7 @@
  */
 
 int PKCS5_PBKDF2_HMAC_SHA1(const char *pass, int passlen,
-                          unsigned char *salt, int saltlen, int iter,
+                          const unsigned char *salt, int saltlen, int iter,
                           int keylen, unsigned char *out)
 {
        unsigned char digtmp[SHA_DIGEST_LENGTH], *p, itmp[4];
@@ -148,8 +148,10 @@ int PKCS5_v2_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
                          ASN1_TYPE *param, const EVP_CIPHER *c, const EVP_MD *md,
                          int en_de)
 {
-       unsigned char *pbuf, *salt, key[EVP_MAX_KEY_LENGTH];
-       int saltlen, keylen, iter, plen;
+       unsigned char *salt, key[EVP_MAX_KEY_LENGTH];
+       const unsigned char *pbuf;
+       int saltlen, iter, plen;
+       unsigned int keylen;
        PBE2PARAM *pbe2 = NULL;
        const EVP_CIPHER *cipher;
        PBKDF2PARAM *kdf = NULL;
@@ -208,7 +210,7 @@ int PKCS5_v2_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
 
        /* Now check the parameters of the kdf */
 
-       if(kdf->keylength && (ASN1_INTEGER_get(kdf->keylength) != keylen)){
+       if(kdf->keylength && (ASN1_INTEGER_get(kdf->keylength) != (int)keylen)){
                EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN,
                                                EVP_R_UNSUPPORTED_KEYLENGTH);
                goto err;