Deprecate the Low Level CAST APIs

Applications should instead use the higher level EVP APIs, e.g.
EVP_Encrypt*() and EVP_Decrypt*().

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10742)

1 files changed, 38 insertions, 19 deletions

diff --git a/include/openssl/cast.h b/include/openssl/cast.h
index 5f81217d14..f338d411cf 100644
--- a/include/openssl/cast.h
+++ b/include/openssl/cast.h
@@ -23,33 +23,52 @@
 extern "C" {
 # endif
 
-# define CAST_ENCRYPT    1
-# define CAST_DECRYPT    0
-
-# define CAST_LONG unsigned int
-
 # define CAST_BLOCK      8
 # define CAST_KEY_LENGTH 16
 
+# ifndef OPENSSL_NO_DEPRECATED_3_0
+
+#  define CAST_ENCRYPT    1
+#  define CAST_DECRYPT    0
+
+#  define CAST_LONG unsigned int
+
 typedef struct cast_key_st {
     CAST_LONG data[32];
     int short_key;              /* Use reduced rounds for short key */
 } CAST_KEY;
 
-void CAST_set_key(CAST_KEY *key, int len, const unsigned char *data);
-void CAST_ecb_encrypt(const unsigned char *in, unsigned char *out,
-                      const CAST_KEY *key, int enc);
-void CAST_encrypt(CAST_LONG *data, const CAST_KEY *key);
-void CAST_decrypt(CAST_LONG *data, const CAST_KEY *key);
-void CAST_cbc_encrypt(const unsigned char *in, unsigned char *out,
-                      long length, const CAST_KEY *ks, unsigned char *iv,
-                      int enc);
-void CAST_cfb64_encrypt(const unsigned char *in, unsigned char *out,
-                        long length, const CAST_KEY *schedule,
-                        unsigned char *ivec, int *num, int enc);
-void CAST_ofb64_encrypt(const unsigned char *in, unsigned char *out,
-                        long length, const CAST_KEY *schedule,
-                        unsigned char *ivec, int *num);
+# endif /* OPENSSL_NO_DEPRECATED_3_0 */
+
+DEPRECATEDIN_3_0(void CAST_set_key(CAST_KEY *key, int len,
+                                   const unsigned char *data))
+DEPRECATEDIN_3_0(void CAST_ecb_encrypt(const unsigned char *in,
+                                       unsigned char *out,
+                                       const CAST_KEY *key,
+                                       int enc))
+DEPRECATEDIN_3_0(void CAST_encrypt(CAST_LONG *data,
+                                   const CAST_KEY *key))
+DEPRECATEDIN_3_0(void CAST_decrypt(CAST_LONG *data,
+                                   const CAST_KEY *key))
+DEPRECATEDIN_3_0(void CAST_cbc_encrypt(const unsigned char *in,
+                                       unsigned char *out,
+                                       long length,
+                                       const CAST_KEY *ks,
+                                       unsigned char *iv,
+                                       int enc))
+DEPRECATEDIN_3_0(void CAST_cfb64_encrypt(const unsigned char *in,
+                                         unsigned char *out,
+                                         long length,
+                                         const CAST_KEY *schedule,
+                                         unsigned char *ivec,
+                                         int *num,
+                                         int enc))
+DEPRECATEDIN_3_0(void CAST_ofb64_encrypt(const unsigned char *in,
+                                         unsigned char *out,
+                                         long length,
+                                         const CAST_KEY *schedule,
+                                         unsigned char *ivec,
+                                         int *num))
 
 # ifdef  __cplusplus
 }