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authorMicael Karlberg <[email protected]>2011-12-05 17:03:58 +0100
committerMicael Karlberg <[email protected]>2011-12-05 17:03:58 +0100
commitc7effd14268d2058cfd83fa847bc3692cb30a7fc (patch)
tree6aa0e67f1299a1327d3ad333876fec7d864c32d2
parent7bfb08d4bd217b6df8a8aca3aeeed9f414276d81 (diff)
parent290be471b96879bd9cdcc89d7841eb5557c54e50 (diff)
downloadotp-c7effd14268d2058cfd83fa847bc3692cb30a7fc.tar.gz
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Merge branch 'master' of super:otp
-rw-r--r--lib/crypto/c_src/crypto.c219
-rw-r--r--lib/crypto/doc/src/crypto.xml4
-rw-r--r--lib/crypto/src/crypto.erl87
3 files changed, 289 insertions, 21 deletions
diff --git a/lib/crypto/c_src/crypto.c b/lib/crypto/c_src/crypto.c
index 802c1991de..4dc62421d2 100644
--- a/lib/crypto/c_src/crypto.c
+++ b/lib/crypto/c_src/crypto.c
@@ -53,6 +53,17 @@
#include <openssl/evp.h>
#include <openssl/hmac.h>
+#if OPENSSL_VERSION_NUMBER >= 0x00908000L && !defined(OPENSSL_NO_SHA256) && defined(NID_sha256)
+# define HAVE_SHA256
+#endif
+#if OPENSSL_VERSION_NUMBER >= 0x00908000L && !defined(OPENSSL_NO_SHA384) && defined(NID_sha384)\
+ && !defined(OPENSSL_NO_SHA512) /* disabled like this in my sha.h (?) */
+# define HAVE_SHA384
+#endif
+#if OPENSSL_VERSION_NUMBER >= 0x00908000L && !defined(OPENSSL_NO_SHA512) && defined(NID_sha512)
+# define HAVE_SHA512
+#endif
+
#ifdef VALGRIND
# include <valgrind/memcheck.h>
@@ -124,6 +135,14 @@ 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[]);
static ERL_NIF_TERM sha_final(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM sha256_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM sha256_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM sha256_update_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM sha256_final_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM sha512_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM sha512_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM sha512_update_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM sha512_final_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM md4(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM md4_init(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM md4_update(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
@@ -148,7 +167,7 @@ static ERL_NIF_TERM strong_rand_mpint_nif(ErlNifEnv* env, int argc, const ERL_NI
static ERL_NIF_TERM rand_uniform_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM mod_exp_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM dss_verify(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM rsa_verify(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM rsa_verify_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM aes_cbc_crypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM exor(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM rc4_encrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
@@ -201,6 +220,14 @@ static ErlNifFunc nif_funcs[] = {
{"sha_init", 0, sha_init},
{"sha_update", 2, sha_update},
{"sha_final", 1, sha_final},
+ {"sha256_nif", 1, sha256_nif},
+ {"sha256_init_nif", 0, sha256_init_nif},
+ {"sha256_update_nif", 2, sha256_update_nif},
+ {"sha256_final_nif", 1, sha256_final_nif},
+ {"sha512_nif", 1, sha512_nif},
+ {"sha512_init_nif", 0, sha512_init_nif},
+ {"sha512_update_nif", 2, sha512_update_nif},
+ {"sha512_final_nif", 1, sha512_final_nif},
{"md4", 1, md4},
{"md4_init", 0, md4_init},
{"md4_update", 2, md4_update},
@@ -228,7 +255,7 @@ static ErlNifFunc nif_funcs[] = {
{"rand_uniform_nif", 2, rand_uniform_nif},
{"mod_exp_nif", 3, mod_exp_nif},
{"dss_verify", 4, dss_verify},
- {"rsa_verify", 4, rsa_verify},
+ {"rsa_verify_nif", 4, rsa_verify_nif},
{"aes_cbc_crypt", 4, aes_cbc_crypt},
{"exor", 2, exor},
{"rc4_encrypt", 2, rc4_encrypt},
@@ -260,6 +287,9 @@ ERL_NIF_INIT(crypto,nif_funcs,load,reload,upgrade,unload)
#define SHA_CTX_LEN (sizeof(SHA_CTX))
#define SHA_LEN 20
#define SHA_LEN_96 12
+#define SHA256_LEN (256/8)
+#define SHA384_LEN (384/8)
+#define SHA512_LEN (512/8)
#define HMAC_INT_LEN 64
#define HMAC_IPAD 0x36
@@ -270,6 +300,9 @@ static ErlNifRWLock** lock_vec = NULL; /* Static locks used by openssl */
static ERL_NIF_TERM atom_true;
static ERL_NIF_TERM atom_false;
static ERL_NIF_TERM atom_sha;
+static ERL_NIF_TERM atom_sha256;
+static ERL_NIF_TERM atom_sha384;
+static ERL_NIF_TERM atom_sha512;
static ERL_NIF_TERM atom_md5;
static ERL_NIF_TERM atom_ripemd160;
static ERL_NIF_TERM atom_error;
@@ -286,6 +319,7 @@ static ERL_NIF_TERM atom_not_suitable_generator;
static ERL_NIF_TERM atom_check_failed;
static ERL_NIF_TERM atom_unknown;
static ERL_NIF_TERM atom_none;
+static ERL_NIF_TERM atom_notsup;
static int is_ok_load_info(ErlNifEnv* env, ERL_NIF_TERM load_info)
@@ -340,6 +374,9 @@ static int load(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info)
atom_true = enif_make_atom(env,"true");
atom_false = enif_make_atom(env,"false");
atom_sha = enif_make_atom(env,"sha");
+ atom_sha256 = enif_make_atom(env,"sha256");
+ atom_sha384 = enif_make_atom(env,"sha384");
+ atom_sha512 = enif_make_atom(env,"sha512");
atom_md5 = enif_make_atom(env,"md5");
atom_ripemd160 = enif_make_atom(env,"ripemd160");
atom_error = enif_make_atom(env,"error");
@@ -355,6 +392,7 @@ static int load(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info)
atom_check_failed = enif_make_atom(env,"check_failed");
atom_unknown = enif_make_atom(env,"unknown");
atom_none = enif_make_atom(env,"none");
+ atom_notsup = enif_make_atom(env,"notsup");
*priv_data = NULL;
library_refc++;
@@ -519,6 +557,129 @@ static ERL_NIF_TERM sha_final(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[
return ret;
}
+static ERL_NIF_TERM sha256_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Data) */
+#ifdef HAVE_SHA256
+ ErlNifBinary ibin;
+ ERL_NIF_TERM ret;
+
+ if (!enif_inspect_iolist_as_binary(env, argv[0], &ibin)) {
+ return enif_make_badarg(env);
+ }
+ SHA256((unsigned char *) ibin.data, ibin.size,
+ enif_make_new_binary(env,SHA256_LEN, &ret));
+ return ret;
+#else
+ return atom_notsup;
+#endif
+}
+static ERL_NIF_TERM sha256_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* () */
+#ifdef HAVE_SHA256
+ ERL_NIF_TERM ret;
+ SHA256_Init((SHA256_CTX *) enif_make_new_binary(env, sizeof(SHA256_CTX), &ret));
+ return ret;
+#else
+ return atom_notsup;
+#endif
+}
+static ERL_NIF_TERM sha256_update_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Context, Data) */
+#ifdef HAVE_SHA256
+ SHA256_CTX* new_ctx;
+ ErlNifBinary ctx_bin, data_bin;
+ ERL_NIF_TERM ret;
+ if (!enif_inspect_binary(env, argv[0], &ctx_bin) || ctx_bin.size != sizeof(SHA256_CTX)
+ || !enif_inspect_iolist_as_binary(env, argv[1], &data_bin)) {
+ return enif_make_badarg(env);
+ }
+ new_ctx = (SHA256_CTX*) enif_make_new_binary(env,sizeof(SHA256_CTX), &ret);
+ memcpy(new_ctx, ctx_bin.data, sizeof(SHA256_CTX));
+ SHA256_Update(new_ctx, data_bin.data, data_bin.size);
+ return ret;
+#else
+ return atom_notsup;
+#endif
+}
+static ERL_NIF_TERM sha256_final_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Context) */
+#ifdef HAVE_SHA256
+ ErlNifBinary ctx_bin;
+ SHA256_CTX ctx_clone;
+ ERL_NIF_TERM ret;
+ if (!enif_inspect_binary(env, argv[0], &ctx_bin) || ctx_bin.size != sizeof(SHA256_CTX)) {
+ return enif_make_badarg(env);
+ }
+ memcpy(&ctx_clone, ctx_bin.data, sizeof(SHA256_CTX)); /* writable */
+ SHA256_Final(enif_make_new_binary(env, SHA256_LEN, &ret), &ctx_clone);
+ return ret;
+#else
+ return atom_notsup;
+#endif
+}
+
+static ERL_NIF_TERM sha512_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Data) */
+#ifdef HAVE_SHA512
+ ErlNifBinary ibin;
+ ERL_NIF_TERM ret;
+
+ if (!enif_inspect_iolist_as_binary(env, argv[0], &ibin)) {
+ return enif_make_badarg(env);
+ }
+ SHA512((unsigned char *) ibin.data, ibin.size,
+ enif_make_new_binary(env,SHA512_LEN, &ret));
+ return ret;
+#else
+ return atom_notsup;
+#endif
+}
+static ERL_NIF_TERM sha512_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* () */
+#ifdef HAVE_SHA512
+ ERL_NIF_TERM ret;
+ SHA512_Init((SHA512_CTX *) enif_make_new_binary(env, sizeof(SHA512_CTX), &ret));
+ return ret;
+#else
+ return atom_notsup;
+#endif
+}
+static ERL_NIF_TERM sha512_update_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Context, Data) */
+#ifdef HAVE_SHA512
+ SHA512_CTX* new_ctx;
+ ErlNifBinary ctx_bin, data_bin;
+ ERL_NIF_TERM ret;
+ if (!enif_inspect_binary(env, argv[0], &ctx_bin) || ctx_bin.size != sizeof(SHA512_CTX)
+ || !enif_inspect_iolist_as_binary(env, argv[1], &data_bin)) {
+ return enif_make_badarg(env);
+ }
+ new_ctx = (SHA512_CTX*) enif_make_new_binary(env,sizeof(SHA512_CTX), &ret);
+ memcpy(new_ctx, ctx_bin.data, sizeof(SHA512_CTX));
+ SHA512_Update(new_ctx, data_bin.data, data_bin.size);
+ return ret;
+#else
+ return atom_notsup;
+#endif
+}
+static ERL_NIF_TERM sha512_final_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Context) */
+#ifdef HAVE_SHA512
+ ErlNifBinary ctx_bin;
+ SHA512_CTX ctx_clone;
+ ERL_NIF_TERM ret;
+ if (!enif_inspect_binary(env, argv[0], &ctx_bin) || ctx_bin.size != sizeof(SHA512_CTX)) {
+ return enif_make_badarg(env);
+ }
+ memcpy(&ctx_clone, ctx_bin.data, sizeof(SHA512_CTX)); /* writable */
+ SHA512_Final(enif_make_new_binary(env, SHA512_LEN, &ret), &ctx_clone);
+ return ret;
+#else
+ return atom_notsup;
+#endif
+}
+
+
static ERL_NIF_TERM md4(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{/* (Data) */
ErlNifBinary ibin;
@@ -1095,17 +1256,14 @@ static ERL_NIF_TERM dss_verify(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv
return(i > 0) ? atom_true : atom_false;
}
-static ERL_NIF_TERM rsa_verify(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+static ERL_NIF_TERM rsa_verify_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{/* (Type, Data, Signature, Key=[E,N]) */
ErlNifBinary data_bin, sign_bin;
- unsigned char hmacbuf[SHA_DIGEST_LENGTH];
+ unsigned char hmacbuf[SHA512_LEN];
ERL_NIF_TERM head, tail, ret;
- int i, is_sha;
+ int i;
RSA* rsa = RSA_new();
-
- if (argv[0] == atom_sha) is_sha = 1;
- else if (argv[0] == atom_md5) is_sha = 0;
- else goto badarg;
+ const ERL_NIF_TERM type = argv[0];
if (!inspect_mpint(env, argv[1], &data_bin)
|| !inspect_mpint(env, argv[2], &sign_bin)
@@ -1114,22 +1272,57 @@ static ERL_NIF_TERM rsa_verify(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv
|| !enif_get_list_cell(env, tail, &head, &tail)
|| !get_bn_from_mpint(env, head, &rsa->n)
|| !enif_is_empty_list(env, tail)) {
- badarg:
+
ret = enif_make_badarg(env);
}
else {
- if (is_sha) {
+ if (type == atom_sha) {
SHA1(data_bin.data+4, data_bin.size-4, hmacbuf);
i = RSA_verify(NID_sha1, hmacbuf, SHA_DIGEST_LENGTH,
sign_bin.data+4, sign_bin.size-4, rsa);
}
- else {
+ else if (type == atom_sha256) {
+ #ifdef HAVE_SHA256
+ SHA256(data_bin.data+4, data_bin.size-4, hmacbuf);
+ i = RSA_verify(NID_sha256, hmacbuf, SHA256_LEN,
+ sign_bin.data+4, sign_bin.size-4, rsa);
+ #else
+ ret = atom_notsup;
+ goto done;
+ #endif
+ }
+ else if (type == atom_sha384) {
+ #ifdef HAVE_SHA384
+ SHA384(data_bin.data+4, data_bin.size-4, hmacbuf);
+ i = RSA_verify(NID_sha384, hmacbuf, SHA384_LEN,
+ sign_bin.data+4, sign_bin.size-4, rsa);
+ #else
+ ret = atom_notsup;
+ goto done;
+ #endif
+ }
+ else if (type == atom_sha512) {
+ #ifdef HAVE_SHA512
+ SHA512(data_bin.data+4, data_bin.size-4, hmacbuf);
+ i = RSA_verify(NID_sha512, hmacbuf, SHA512_LEN,
+ sign_bin.data+4, sign_bin.size-4, rsa);
+ #else
+ ret = atom_notsup;
+ goto done;
+ #endif
+ }
+ else if (type == atom_md5) {
MD5(data_bin.data+4, data_bin.size-4, hmacbuf);
i = RSA_verify(NID_md5, hmacbuf, MD5_DIGEST_LENGTH,
sign_bin.data+4, sign_bin.size-4, rsa);
}
+ else {
+ ret = enif_make_badarg(env);
+ goto done;
+ }
ret = (i==1 ? atom_true : atom_false);
- }
+ }
+done:
RSA_free(rsa);
return ret;
}
diff --git a/lib/crypto/doc/src/crypto.xml b/lib/crypto/doc/src/crypto.xml
index 48243fd693..dc22f2aa14 100644
--- a/lib/crypto/doc/src/crypto.xml
+++ b/lib/crypto/doc/src/crypto.xml
@@ -896,7 +896,7 @@ Mpint() = <![CDATA[<<ByteLen:32/integer-big, Bytes:ByteLen/binary>>]]>
<v>Key = [E, N]</v>
<v>E, N = Mpint</v>
<d>Where <c>E</c> is the public exponent and <c>N</c> is public modulus.</d>
- <v>DigestType = md5 | sha</v>
+ <v>DigestType = md5 | sha | sha256 | sha384 | sha512</v>
<d> The default <c>DigestType</c> is sha.</d>
<v>Mpint = binary()</v>
</type>
@@ -905,6 +905,8 @@ Mpint() = <![CDATA[<<ByteLen:32/integer-big, Bytes:ByteLen/binary>>]]>
and verifies that the digest matches the RSA signature using the
signer's public key <c>Key</c>.
</p>
+ <p>May throw exception <c>notsup</c> in case the choosen <c>DigestType</c>
+ is not supported by the underlying OpenSSL implementation.</p>
</desc>
</func>
diff --git a/lib/crypto/src/crypto.erl b/lib/crypto/src/crypto.erl
index 0714cb686d..d7aac27825 100644
--- a/lib/crypto/src/crypto.erl
+++ b/lib/crypto/src/crypto.erl
@@ -25,8 +25,8 @@
-export([md4/1, md4_init/0, md4_update/2, md4_final/1]).
-export([md5/1, md5_init/0, md5_update/2, md5_final/1]).
-export([sha/1, sha_init/0, sha_update/2, sha_final/1]).
-%-export([sha256/1, sha256_init/0, sha256_update/2, sha256_final/1]).
-%-export([sha512/1, sha512_init/0, sha512_update/2, sha512_final/1]).
+-export([sha256/1, sha256_init/0, sha256_update/2, sha256_final/1]).
+-export([sha512/1, sha512_init/0, sha512_update/2, sha512_final/1]).
-export([md5_mac/2, md5_mac_96/2, sha_mac/2, sha_mac/3, sha_mac_96/2]).
-export([hmac_init/2, hmac_update/2, hmac_final/1, hmac_final_n/2]).
-export([des_cbc_encrypt/3, des_cbc_decrypt/3, des_cbc_ivec/1]).
@@ -64,8 +64,8 @@
-define(FUNC_LIST, [md4, md4_init, md4_update, md4_final,
md5, md5_init, md5_update, md5_final,
sha, sha_init, sha_update, sha_final,
-%% sha256, sha256_init, sha256_update, sha256_final,
-%% sha512, sha512_init, sha512_update, sha512_final,
+ sha256, sha256_init, sha256_update, sha256_final,
+ sha512, sha512_init, sha512_update, sha512_final,
md5_mac, md5_mac_96,
sha_mac, sha_mac_96,
sha_mac_init, sha_mac_update, sha_mac_final,
@@ -95,7 +95,7 @@
aes_ctr_stream_init, aes_ctr_stream_encrypt, aes_ctr_stream_decrypt,
info_lib]).
--type rsa_digest_type() :: 'md5' | 'sha'.
+-type rsa_digest_type() :: 'md5' | 'sha' | 'sha256' | 'sha384' | 'sha512'.
-type dss_digest_type() :: 'none' | 'sha'.
-type crypto_integer() :: binary() | integer().
@@ -219,6 +219,73 @@ sha_init() -> ?nif_stub.
sha_update(_Context, _Data) -> ?nif_stub.
sha_final(_Context) -> ?nif_stub.
+%
+%% SHA256
+%%
+-spec sha256(iodata()) -> binary().
+-spec sha256_init() -> binary().
+-spec sha256_update(binary(), iodata()) -> binary().
+-spec sha256_final(binary()) -> binary().
+
+sha256(Data) ->
+ case sha256_nif(Data) of
+ notsup -> erlang:error(notsup);
+ Bin -> Bin
+ end.
+sha256_init() ->
+ case sha256_init_nif() of
+ notsup -> erlang:error(notsup);
+ Bin -> Bin
+ end.
+sha256_update(Context, Data) ->
+ case sha256_update_nif(Context, Data) of
+ notsup -> erlang:error(notsup);
+ Bin -> Bin
+ end.
+sha256_final(Context) ->
+ case sha256_final_nif(Context) of
+ notsup -> erlang:error(notsup);
+ Bin -> Bin
+ end.
+
+sha256_nif(_Data) -> ?nif_stub.
+sha256_init_nif() -> ?nif_stub.
+sha256_update_nif(_Context, _Data) -> ?nif_stub.
+sha256_final_nif(_Context) -> ?nif_stub.
+
+%
+%% SHA512
+%%
+-spec sha512(iodata()) -> binary().
+-spec sha512_init() -> binary().
+-spec sha512_update(binary(), iodata()) -> binary().
+-spec sha512_final(binary()) -> binary().
+
+sha512(Data) ->
+ case sha512_nif(Data) of
+ notsup -> erlang:error(notsup);
+ Bin -> Bin
+ end.
+sha512_init() ->
+ case sha512_init_nif() of
+ notsup -> erlang:error(notsup);
+ Bin -> Bin
+ end.
+sha512_update(Context, Data) ->
+ case sha512_update_nif(Context, Data) of
+ notsup -> erlang:error(notsup);
+ Bin -> Bin
+ end.
+sha512_final(Context) ->
+ case sha512_final_nif(Context) of
+ notsup -> erlang:error(notsup);
+ Bin -> Bin
+ end.
+
+sha512_nif(_Data) -> ?nif_stub.
+sha512_init_nif() -> ?nif_stub.
+sha512_update_nif(_Context, _Data) -> ?nif_stub.
+sha512_final_nif(_Context) -> ?nif_stub.
%%
%% MESSAGE AUTHENTICATION CODES
@@ -522,8 +589,14 @@ dss_verify(_Type,_Data,_Signature,_Key) -> ?nif_stub.
% Key = [E,N] E=PublicExponent N=PublicModulus
rsa_verify(Data,Signature,Key) ->
- rsa_verify(sha, Data,Signature,Key).
-rsa_verify(_Type,_Data,_Signature,_Key) -> ?nif_stub.
+ rsa_verify_nif(sha, Data,Signature,Key).
+rsa_verify(Type, Data, Signature, Key) ->
+ case rsa_verify_nif(Type, Data, Signature, Key) of
+ notsup -> erlang:error(notsup);
+ Bool -> Bool
+ end.
+
+rsa_verify_nif(_Type, _Data, _Signature, _Key) -> ?nif_stub.
%%