Import Debian changes 4.89-2+deb9u4

[hcoop/debian/exim4.git] / src / hash.h

diff --git a/src/hash.h b/src/hash.h
new file mode 100644 (file)
index 0000000..09b6594
--- /dev/null
+++ b/src/hash.h
@@ -0,0 +1,76 @@
+/*
+ *  Exim - an Internet mail transport agent
+ *
+ *  Copyright (C) 2016  Exim maintainers
+ *
+ *  Hash interface functions
+ */
+
+#include "exim.h"
+
+#if !defined(HASH_H)   /* entire file */
+#define HASH_H
+
+#include "sha_ver.h"
+#include "blob.h"
+
+#ifdef SHA_OPENSSL
+# include <openssl/sha.h>
+#elif defined SHA_GNUTLS
+# include <gnutls/crypto.h>
+#elif defined(SHA_GCRYPT)
+# include <gcrypt.h>
+#elif defined(SHA_POLARSSL)
+# include "pdkim/pdkim.h"              /*XXX ugly */
+# include "pdkim/polarssl/sha1.h"
+# include "pdkim/polarssl/sha2.h"
+#endif
+
+
+/* Hash context for the exim_sha_* routines */
+
+typedef enum hashmethod {
+  HASH_BADTYPE,
+  HASH_SHA1,
+  HASH_SHA256,
+  HASH_SHA3_224,
+  HASH_SHA3_256,
+  HASH_SHA3_384,
+  HASH_SHA3_512,
+} hashmethod;
+
+typedef struct {
+  hashmethod   method;
+  int          hashlen;
+
+#ifdef SHA_OPENSSL
+  union {
+    SHA_CTX      sha1;       /* SHA1 block                                */
+    SHA256_CTX   sha2;       /* SHA256 block                              */
+  } u;
+
+#elif defined(SHA_GNUTLS)
+  gnutls_hash_hd_t sha;      /* Either SHA1 or SHA256 block               */
+
+#elif defined(SHA_GCRYPT)
+  gcry_md_hd_t sha;          /* Either SHA1 or SHA256 block               */
+
+#elif defined(SHA_POLARSSL)
+  union {
+    sha1_context sha1;       /* SHA1 block                                */
+    sha2_context sha2;       /* SHA256 block                              */
+  } u;
+
+#elif defined(SHA_NATIVE)
+  sha1 sha1;
+#endif
+
+} hctx;
+
+extern BOOL     exim_sha_init(hctx *, hashmethod);
+extern void     exim_sha_update(hctx *, const uschar *a, int);
+extern void     exim_sha_finish(hctx *, blob *);
+extern int      exim_sha_hashlen(hctx *);
+
+#endif
+/* End of File */