Clean up headers and typedefs.

Fix context length in the algorithm descriptors.
Expose the block length and include it in the algorithm descriptors.
Complete the list of available digest algorithms.

include/cryb/Makefile.am

@@ -9,6 +9,7 @@ cryb_HEADERS = \
 	digest.h \
 	hmac.h \
 	hotp.h \
+	md.h \
 	md2.h \
 	md4.h \
 	md5.h \
@@ -18,6 +19,7 @@ cryb_HEADERS = \
 	rand.h \
 	rfc3986.h \
 	rfc4648.h \
+	sha.h \
 	sha1.h \
 	sha256.h \
 	sha384.h \

include/cryb/digest.h

@@ -27,33 +27,29 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * Author: Dag-Erling Smørgrav <des@des.no>
- * Sponsor: the University of Oslo
- *
  * $Cryb$
  */
 
 #ifndef CRYB_DIGEST_H_INCLUDED
 #define CRYB_DIGEST_H_INCLUDED
 
+#define digest_ctx			cryb_digest_ctx
 #define digest_init_func		cryb_digest_init_func
 #define digest_update_func		cryb_digest_update_func
 #define digest_final_func		cryb_digest_final_func
 #define digest_complete_func		cryb_digest_complete_func
 #define digest_algorithm		cryb_digest_algorithm
-#define digest_init			cryb_digest_init
-#define digest_update			cryb_digest_update
-#define digest_final			cryb_digest_final
-#define digest_complete			cryb_digest_complete
 
-typedef void (*digest_init_func)(void *);
-typedef void (*digest_update_func)(void *, const void *, size_t);
-typedef void (*digest_final_func)(void *, void *);
+typedef void digest_ctx;
+typedef void (*digest_init_func)(digest_ctx *);
+typedef void (*digest_update_func)(digest_ctx *, const void *, size_t);
+typedef void (*digest_final_func)(digest_ctx *, void *);
 typedef int (*digest_complete_func)(const void *, size_t, void *);
 
-typedef struct digest_algorithm {
+typedef struct {
 	const char		*name;		/* algorithm name */
 	size_t			 contextlen;	/* size of context structure */
+	size_t			 blocklen;	/* block length */
 	size_t			 digestlen;	/* length of the digest */
 	digest_init_func	 init;		/* initialization method */
 	digest_update_func	 update;	/* update method */
@@ -61,9 +57,17 @@ typedef struct digest_algorithm {
 	digest_complete_func	 complete;	/* one-shot method */
 } digest_algorithm;
 
-void *digest_init(const char *);
-void digest_update(void *, const void *, size_t);
-void digest_final(void *, void *);
-int digest_complete(const char *, const void *, size_t, void *);
+#define get_digest_algorithm		cryb_get_digest_algorithm
+
+const digest_algorithm *get_digest_algorithm(const char *);
+
+#define digest_init(alg, ctx)						\
+	(alg)->init((ctx))
+#define digest_update(alg, ctx, buf, len)				\
+	(alg)->update((ctx), (buf), (len))
+#define digest_final(alg, ctx, md)					\
+	(alg)->final((ctx), (md))
+#define digest_complete(alg, buf, len, md)				\
+	(alg)->update((buf), (len), (md))
 
 #endif

include/cryb/hmac.h

@@ -36,10 +36,12 @@
 #ifndef CRYB_HMAC_H_INCLUDED
 #define CRYB_HMAC_H_INCLUDED
 
+#include <cryb/sha1.h>
+
 #define HMAC_LEN 20
 
-typedef struct hmac_ctx {
-	struct sha1_ctx sha1_ctx;
+typedef struct {
+	sha1_ctx sha1_ctx;
 	uint8_t key[64];
 	size_t keylen;
 } hmac_ctx;

include/cryb/md.h

@@ -0,0 +1,4 @@
+/* $Cryb$ */
+#include <md2.h>
+#include <md4.h>
+#include <md5.h>

include/cryb/md2.h

@@ -32,7 +32,10 @@
 #ifndef CRYB_MD2_H_INCLUDED
 #define CRYB_MD2_H_INCLUDED
 
-#define MD2_DIGEST_LEN 16
+#include <cryb/digest.h>
+
+#define MD2_BLOCK_LEN			16
+#define MD2_DIGEST_LEN			16
 
 #define md2_digest			cryb_md2_digest
 #define md2_ctx				cryb_md2_ctx
@@ -41,7 +44,7 @@
 #define md2_final			cryb_md2_final
 #define md2_complete			cryb_md2_complete
 
-extern struct digest_algorithm md2_digest;
+extern digest_algorithm md2_algorithm;
 
 /**
  * \brief          MD2 context structure
@@ -55,8 +58,7 @@ typedef struct
     unsigned char ipad[64];     /*!< HMAC: inner padding        */
     unsigned char opad[64];     /*!< HMAC: outer padding        */
     int left;                   /*!< amount of data in buffer   */
-}
-md2_ctx;
+} md2_ctx;
 
 #ifdef __cplusplus
 extern "C" {

include/cryb/md4.h

@@ -32,7 +32,10 @@
 #ifndef CRYB_MD4_H_INCLUDED
 #define CRYB_MD4_H_INCLUDED
 
-#define MD4_DIGEST_LEN 16
+#include <cryb/digest.h>
+
+#define MD4_BLOCK_LEN			64
+#define MD4_DIGEST_LEN			16
 
 #define md4_digest			cryb_md4_digest
 #define md4_ctx				cryb_md4_ctx
@@ -41,7 +44,7 @@
 #define md4_final			cryb_md4_final
 #define md4_complete			cryb_md4_complete
 
-extern struct digest_algorithm md4_digest;
+extern digest_algorithm md4_digest;
 
 /**
  * \brief          MD4 context structure

include/cryb/md5.h

@@ -36,7 +36,10 @@
 #ifndef CRYB_MD5_H_INCLUDED
 #define CRYB_MD5_H_INCLUDED
 
-#define MD5_DIGEST_LEN 16
+#include <cryb/digest.h>
+
+#define MD5_BLOCK_LEN			64
+#define MD5_DIGEST_LEN			16
 
 #define md5_digest			cryb_md5_digest
 #define md5_ctx				cryb_md5_ctx
@@ -45,9 +48,9 @@
 #define md5_final			cryb_md5_final
 #define md5_complete			cryb_md5_complete
 
-extern struct digest_algorithm md5_digest;
+extern digest_algorithm md5_digest;
 
-typedef struct md5_ctx {
+typedef struct {
 	uint8_t		 block[64];
 	size_t		 blocklen;
 	uint64_t	 bitlen;

include/cryb/sha.h

@@ -0,0 +1,5 @@
+/* $Cryb$ */
+#include <cryb/sha1.h>
+#include <cryb/sha256.h>
+#include <cryb/sha384.h>
+#include <cryb/sha512.h>

include/cryb/sha1.h

@@ -36,7 +36,10 @@
 #ifndef CRYB_SHA1_H_INCLUDED
 #define CRYB_SHA1_H_INCLUDED
 
-#define SHA1_DIGEST_LEN 20
+#include <cryb/digest.h>
+
+#define SHA1_BLOCK_LEN			64
+#define SHA1_DIGEST_LEN			20
 
 #define sha1_digest			cryb_sha1_digest
 #define sha1_ctx			cryb_sha1_ctx
@@ -45,16 +48,16 @@
 #define sha1_final			cryb_sha1_final
 #define sha1_complete			cryb_sha1_complete
 
-extern struct digest_algorithm sha1_digest;
+extern digest_algorithm sha1_digest;
 
-typedef struct sha1_ctx {
+typedef struct {
 	uint8_t block[64];
 	size_t blocklen;
 	uint64_t bitlen;
 	uint32_t h[5], k[4];
 } sha1_ctx;
 
-extern struct digest_algorithm sha1_algorithm;
+extern digest_algorithm sha1_algorithm;
 
 void sha1_init(sha1_ctx *);
 void sha1_update(sha1_ctx *, const void *, size_t);

include/cryb/sha256.h

@@ -29,7 +29,10 @@
 #ifndef CRYB_SHA256_H_INCLUDED
 #define CRYB_SHA256_H_INCLUDED
 
-#define SHA256_DIGEST_LEN 32
+#include <cryb/digest.h>
+
+#define SHA256_BLOCK_LEN		64
+#define SHA256_DIGEST_LEN		32
 
 /*
  * Use #defines in order to avoid namespace collisions with anyone else's
@@ -42,7 +45,7 @@
 #define sha256_final			cryb_sha256_final
 #define sha256_complete			cryb_sha256_complete
 
-extern struct digest_algorithm sha256_digest;
+extern digest_algorithm sha256_digest;
 
 #define hmac_sha256_init cryb_hmac_sha256_init
 #define hmac_sha256_update cryb_hmac_sha256_update

include/cryb/sha384.h

@@ -32,7 +32,10 @@
 #ifndef CRYB_SHA384_H_INCLUDED
 #define CRYB_SHA384_H_INCLUDED
 
-#define SHA384_DIGEST_LEN 48
+#include <cryb/digest.h>
+
+#define SHA384_BLOCK_LEN		128
+#define SHA384_DIGEST_LEN		48
 
 #define sha384_digest			cryb_sha384_digest
 #define sha384_ctx			cryb_sha384_ctx
@@ -41,7 +44,7 @@
 #define sha384_final			cryb_sha384_final
 #define sha384_complete			cryb_sha384_complete
 
-extern struct digest_algorithm sha384_digest;
+extern digest_algorithm sha384_digest;
 
 /**
  * \brief          SHA-384 context structure

include/cryb/sha512.h

@@ -32,7 +32,10 @@
 #ifndef CRYB_SHA512_H_INCLUDED
 #define CRYB_SHA512_H_INCLUDED
 
-#define SHA512_DIGEST_LEN 64
+#include <cryb/digest.h>
+
+#define SHA512_BLOCK_LEN		128
+#define SHA512_DIGEST_LEN		64
 
 #define sha512_digest			cryb_sha512_digest
 #define sha512_ctx			cryb_sha512_ctx
@@ -41,7 +44,7 @@
 #define sha512_final			cryb_sha512_final
 #define sha512_complete			cryb_sha512_complete
 
-extern struct digest_algorithm sha512_digest;
+extern digest_algorithm sha512_digest;
 
 /**
  * \brief          SHA-512 context structure

lib/digest/digest.c

@@ -37,27 +37,36 @@
 
 #include <string.h>
 
-#include <cryb/digest.h>
+#include <cryb/md2.h>
+#include <cryb/md4.h>
 #include <cryb/md5.h>
 #include <cryb/sha1.h>
+#include <cryb/sha256.h>
+#include <cryb/sha384.h>
+#include <cryb/sha512.h>
 
-static const struct digest_algorithm **cryb_digest_algorithms;
+static const digest_algorithm **cryb_digest_algorithms;
 
 static void
-cryb_init_digest_algorithms(void)
+init_digest_algorithms(void)
 {
-	static const struct digest_algorithm *algorithms[] = {
-		&cryb_md5_algorithm,
-		&cryb_sha1_algorithm,
+	static const digest_algorithm *algorithms[] = {
+		&md2_algorithm,
+		&md4_algorithm,
+		&md5_algorithm,
+		&sha1_algorithm,
+		&sha256_algorithm,
+		&sha384_algorithm,
+		&sha512_algorithm,
 		NULL
 	};
 	cryb_digest_algorithms = algorithms;
 }
 
-const struct digest_algorithm *
-cryb_digest_algorithm(const char *name)
+const digest_algorithm *
+get_digest_algorithm(const char *name)
 {
-	const struct digest_algorithm **algp;
+	const digest_algorithm **algp;
 
 	if (cryb_digest_algorithms == NULL)
 		cryb_init_digest_algorithms();
@@ -66,4 +75,3 @@ cryb_digest_algorithm(const char *name)
 			return (*algp);
 	return (NULL);
 }
-

lib/digest/md2.c

@@ -39,7 +39,6 @@
 
 #include <string.h>
 
-#include <cryb/digest.h>
 #include <cryb/md2.h>
 
 static const unsigned char PI_SUBST[256] =
@@ -246,9 +245,10 @@ void md2_hmac_complete( unsigned char *key, int keylen, unsigned char *input, in
     memset( &ctx, 0, sizeof( md2_ctx ) );
 }
 
-struct digest_algorithm md2_digest = {
+digest_algorithm md2_algorithm = {
 	.name			 = "md2",
-	.contextlen		 = sizeof md2_digest,
+	.contextlen		 = sizeof(md2_ctx),
+	.blocklen		 = MD2_BLOCK_LEN,
 	.digestlen		 = MD2_DIGEST_LEN,
 	.init			 = (digest_init_func)md2_init,
 	.update			 = (digest_update_func)md2_update,

lib/digest/md4.c

@@ -39,7 +39,6 @@
 
 #include <string.h>
 
-#include <cryb/digest.h>
 #include <cryb/md4.h>
 
 /*
@@ -345,9 +344,10 @@ void md4_hmac_complete( unsigned char *key, int keylen, unsigned char *input, in
     memset( &ctx, 0, sizeof( md4_ctx ) );
 }
 
-struct digest_algorithm md4_digest = {
+digest_algorithm md4_algorithm = {
 	.name			 = "md4",
-	.contextlen		 = sizeof md4_digest,
+	.contextlen		 = sizeof(md4_ctx),
+	.blocklen		 = MD4_BLOCK_LEN,
 	.digestlen		 = MD4_DIGEST_LEN,
 	.init			 = (digest_init_func)md4_init,
 	.update			 = (digest_update_func)md4_update,

lib/digest/md5.c

@@ -47,7 +47,6 @@
 #include <stdint.h>
 #include <string.h>
 
-#include <cryb/digest.h>
 #include <cryb/bitwise.h>
 #include <cryb/md5.h>
 
@@ -76,7 +75,7 @@ static const uint32_t md5_k[64] = {
 };
 
 void
-md5_init(struct md5_ctx *ctx)
+md5_init(md5_ctx *ctx)
 {
 
 	memset(ctx, 0, sizeof *ctx);
@@ -112,7 +111,7 @@ md5_init(struct md5_ctx *ctx)
 	} while (0)
 
 static void
-md5_compute(struct md5_ctx *ctx, const uint8_t *block)
+md5_compute(md5_ctx *ctx, const uint8_t *block)
 {
 	uint32_t w[16], a, b, c, d;
 	int i;
@@ -203,7 +202,7 @@ md5_compute(struct md5_ctx *ctx, const uint8_t *block)
 }
 
 void
-md5_update(struct md5_ctx *ctx, const void *buf, size_t len)
+md5_update(md5_ctx *ctx, const void *buf, size_t len)
 {
 	size_t copylen;
 
@@ -230,7 +229,7 @@ md5_update(struct md5_ctx *ctx, const void *buf, size_t len)
 }
 
 void
-md5_final(struct md5_ctx *ctx, void *digest)
+md5_final(md5_ctx *ctx, void *digest)
 {
 
 	ctx->block[ctx->blocklen++] = 0x80;
@@ -252,16 +251,17 @@ md5_final(struct md5_ctx *ctx, void *digest)
 void
 md5_complete(const void *buf, size_t len, void *digest)
 {
-	struct md5_ctx ctx;
+	md5_ctx ctx;
 
 	md5_init(&ctx);
 	md5_update(&ctx, buf, len);
 	md5_final(&ctx, digest);
 }
 
-struct digest_algorithm md5_digest = {
+digest_algorithm md5_digest = {
 	.name			 = "md5",
-	.contextlen		 = sizeof md5_digest,
+	.contextlen		 = sizeof(md5_ctx),
+	.blocklen		 = MD5_BLOCK_LEN,
 	.digestlen		 = MD5_DIGEST_LEN,
 	.init			 = (digest_init_func)md5_init,
 	.update			 = (digest_update_func)md5_update,

lib/digest/sha1.c

@@ -47,10 +47,7 @@
 #include <stdint.h>
 #include <string.h>
 
-#include <cryb/digest.h>
 #include <cryb/bitwise.h>
-
-#include <cryb/digest.h>
 #include <cryb/sha1.h>
 
 static uint32_t sha1_h[5] = {
@@ -62,7 +59,7 @@ static uint32_t sha1_k[4] = {
 };
 
 void
-sha1_init(struct sha1_ctx *ctx)
+sha1_init(sha1_ctx *ctx)
 {
 
 	memset(ctx, 0, sizeof *ctx);
@@ -71,7 +68,7 @@ sha1_init(struct sha1_ctx *ctx)
 }
 
 static void
-sha1_compute(struct sha1_ctx *ctx, const uint8_t *block)
+sha1_compute(sha1_ctx *ctx, const uint8_t *block)
 {
 	uint32_t w[80], a, b, c, d, e, f, temp;
 
@@ -113,7 +110,7 @@ sha1_compute(struct sha1_ctx *ctx, const uint8_t *block)
 }
 
 void
-sha1_update(struct sha1_ctx *ctx, const void *buf, size_t len)
+sha1_update(sha1_ctx *ctx, const void *buf, size_t len)
 {
 	size_t copylen;
 
@@ -140,7 +137,7 @@ sha1_update(struct sha1_ctx *ctx, const void *buf, size_t len)
 }
 
 void
-sha1_final(struct sha1_ctx *ctx, void *digest)
+sha1_final(sha1_ctx *ctx, void *digest)
 {
 	uint32_t hi, lo;
 
@@ -165,16 +162,17 @@ sha1_final(struct sha1_ctx *ctx, void *digest)
 void
 sha1_complete(const void *buf, size_t len, void *digest)
 {
-	struct sha1_ctx ctx;
+	sha1_ctx ctx;
 
 	sha1_init(&ctx);
 	sha1_update(&ctx, buf, len);
 	sha1_final(&ctx, digest);
 }
 
-struct digest_algorithm sha1_digest = {
+digest_algorithm sha1_digest = {
 	.name			 = "sha1",
 	.contextlen		 = sizeof sha1_digest,
+	.blocklen		 = SHA1_BLOCK_LEN,
 	.digestlen		 = SHA1_DIGEST_LEN,
 	.init			 = (digest_init_func)sha1_init,
 	.update			 = (digest_update_func)sha1_update,

lib/digest/sha256.c

@@ -40,7 +40,6 @@
 #include <stdint.h>
 #include <string.h>
 
-#include <cryb/digest.h>
 #include <cryb/sha256.h>
 
 /*
@@ -466,9 +465,10 @@ pbkdf2_sha256(const uint8_t * passwd, size_t passwdlen, const uint8_t * salt,
 	memset(&PShctx, 0, sizeof(hmac_sha256_ctx));
 }
 
-struct digest_algorithm sha256_digest = {
+digest_algorithm sha256_digest = {
 	.name			 = "sha256",
 	.contextlen		 = sizeof sha256_digest,
+	.blocklen		 = SHA256_BLOCK_LEN,
 	.digestlen		 = SHA256_DIGEST_LEN,
 	.init			 = (digest_init_func)sha256_init,
 	.update			 = (digest_update_func)sha256_update,

lib/digest/sha384.c

@@ -39,7 +39,6 @@
 #include <stdint.h>
 #include <string.h>
 
-#include <cryb/digest.h>
 #include <cryb/sha384.h>
 
 static int is384 = 1;
@@ -408,9 +407,10 @@ void sha384_hmac_complete( unsigned char *key, int keylen,
     memset( &ctx, 0, sizeof( sha384_ctx ) );
 }
 
-struct digest_algorithm sha384_digest = {
+digest_algorithm sha384_digest = {
 	.name			 = "sha384",
 	.contextlen		 = sizeof sha384_digest,
+	.blocklen		 = SHA384_BLOCK_LEN,
 	.digestlen		 = SHA384_DIGEST_LEN,
 	.init			 = (digest_init_func)sha384_init,
 	.update			 = (digest_update_func)sha384_update,

lib/digest/sha512.c

@@ -39,7 +39,6 @@
 #include <stdint.h>
 #include <string.h>
 
-#include <cryb/digest.h>
 #include <cryb/sha512.h>
 
 static int is384 = 0;
@@ -408,9 +407,10 @@ void sha512_hmac_complete( unsigned char *key, int keylen,
     memset( &ctx, 0, sizeof( sha512_ctx ) );
 }
 
-struct digest_algorithm sha512_digest = {
+digest_algorithm sha512_digest = {
 	.name			 = "sha512",
 	.contextlen		 = sizeof sha512_digest,
+	.blocklen		 = SHA512_BLOCK_LEN,
 	.digestlen		 = SHA512_DIGEST_LEN,
 	.init			 = (digest_init_func)sha512_init,
 	.update			 = (digest_update_func)sha512_update,

lib/mac/hmac.c

@@ -52,7 +52,7 @@
 #include <cryb/hmac.h>
 
 void
-hmac_init(struct hmac_ctx *ctx, const uint8_t *key, size_t keylen)
+hmac_init(hmac_ctx *ctx, const uint8_t *key, size_t keylen)
 {
 	uint8_t ipad[64];
 
@@ -77,14 +77,14 @@ hmac_init(struct hmac_ctx *ctx, const uint8_t *key, size_t keylen)
 }
 
 void
-hmac_update(struct hmac_ctx *ctx, const uint8_t *buf, size_t len)
+hmac_update(hmac_ctx *ctx, const uint8_t *buf, size_t len)
 {
 
 	sha1_update(&ctx->sha1_ctx, buf, len);
 }
 
 void
-hmac_final(struct hmac_ctx *ctx, uint8_t *mac)
+hmac_final(hmac_ctx *ctx, uint8_t *mac)
 {
 	uint8_t digest[20], opad[64];
 
@@ -102,7 +102,7 @@ void
 hmac_complete(const uint8_t *key, size_t keylen,
     const uint8_t *buf, size_t len, uint8_t *mac)
 {
-	struct hmac_ctx ctx;
+	hmac_ctx ctx;
 
 	hmac_init(&ctx, key, keylen);
 	hmac_update(&ctx, buf, len);