From 3881407ea8444c280d9659f40e6c169a1e10310d Mon Sep 17 00:00:00 2001
From: Michael Loftis <mloftis@wgops.com>
Date: Tue, 18 Dec 2012 15:08:46 -0700
Subject: add ripemd160 support to crypto

add ripemd160 message digest support to the crypto app,
includes some test cases.
---
 lib/crypto/c_src/crypto.c | 56 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)

(limited to 'lib/crypto/c_src/crypto.c')

diff --git a/lib/crypto/c_src/crypto.c b/lib/crypto/c_src/crypto.c
index 72c9e5b8e8..b08e570dba 100644
--- a/lib/crypto/c_src/crypto.c
+++ b/lib/crypto/c_src/crypto.c
@@ -44,6 +44,7 @@
 #include <openssl/md5.h>
 #include <openssl/md4.h>
 #include <openssl/sha.h>
+#include <openssl/ripemd.h>
 #include <openssl/bn.h>
 #include <openssl/objects.h>
 #include <openssl/rc4.h>
@@ -139,6 +140,10 @@ static ERL_NIF_TERM md5(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
 static ERL_NIF_TERM md5_init(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
 static ERL_NIF_TERM md5_update(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
 static ERL_NIF_TERM md5_final(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM ripemd160(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM ripemd160_init(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM ripemd160_update(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM ripemd160_final(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
 static ERL_NIF_TERM sha(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
 static ERL_NIF_TERM sha_init(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
 static ERL_NIF_TERM sha_update(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
@@ -246,6 +251,10 @@ static ErlNifFunc nif_funcs[] = {
     {"md5_init", 0, md5_init},
     {"md5_update", 2, md5_update},
     {"md5_final", 1, md5_final},
+    {"ripemd160", 1, ripemd160},
+    {"ripemd160_init", 0, ripemd160_init},
+    {"ripemd160_update", 2, ripemd160_update},
+    {"ripemd160_final", 1, ripemd160_final},
     {"sha", 1, sha},
     {"sha_init", 0, sha_init},
     {"sha_update", 2, sha_update},
@@ -600,6 +609,53 @@ static ERL_NIF_TERM md5_final(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[
     return ret;
 }
 
+static ERL_NIF_TERM ripemd160(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Data) */
+    ErlNifBinary ibin;
+    ERL_NIF_TERM ret;
+
+    if (!enif_inspect_iolist_as_binary(env, argv[0], &ibin)) {
+  return enif_make_badarg(env);
+    }
+    RIPEMD160((unsigned char *) ibin.data, ibin.size,
+  enif_make_new_binary(env,RIPEMD160_LEN, &ret));
+    return ret;
+}
+static ERL_NIF_TERM ripemd160_init(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* () */
+    ERL_NIF_TERM ret;
+    RIPEMD160_Init((RIPEMD160_CTX *) enif_make_new_binary(env, RIPEMD160_CTX_LEN, &ret));
+    return ret;
+}
+static ERL_NIF_TERM ripemd160_update(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Context, Data) */
+    RIPEMD160_CTX* new_ctx;
+    ErlNifBinary ctx_bin, data_bin;
+    ERL_NIF_TERM ret;
+    if (!enif_inspect_binary(env, argv[0], &ctx_bin)
+  || ctx_bin.size != RIPEMD160_CTX_LEN
+  || !enif_inspect_iolist_as_binary(env, argv[1], &data_bin)) {
+  return enif_make_badarg(env);
+    }
+    new_ctx = (RIPEMD160_CTX*) enif_make_new_binary(env,RIPEMD160_CTX_LEN, &ret);
+    memcpy(new_ctx, ctx_bin.data, RIPEMD160_CTX_LEN);
+    RIPEMD160_Update(new_ctx, data_bin.data, data_bin.size);
+    return ret;
+}
+static ERL_NIF_TERM ripemd160_final(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Context) */
+    ErlNifBinary ctx_bin;
+    RIPEMD160_CTX ctx_clone;
+    ERL_NIF_TERM ret;
+    if (!enif_inspect_binary(env, argv[0], &ctx_bin) || ctx_bin.size != RIPEMD160_CTX_LEN) {
+  return enif_make_badarg(env);
+    }
+    memcpy(&ctx_clone, ctx_bin.data, RIPEMD160_CTX_LEN); /* writable */
+    RIPEMD160_Final(enif_make_new_binary(env, RIPEMD160_LEN, &ret), &ctx_clone);
+    return ret;
+}
+
+
 static ERL_NIF_TERM sha(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
 {/* (Data) */    
     ErlNifBinary ibin;
-- 
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