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-rw-r--r--lib/crypto/c_src/crypto.c25
-rw-r--r--lib/crypto/doc/src/crypto.xml8
-rw-r--r--lib/crypto/doc/src/notes.xml17
-rw-r--r--lib/crypto/src/crypto.erl20
-rw-r--r--lib/crypto/test/crypto_SUITE.erl38
-rw-r--r--lib/crypto/vsn.mk2
6 files changed, 69 insertions, 41 deletions
diff --git a/lib/crypto/c_src/crypto.c b/lib/crypto/c_src/crypto.c
index d4139f0dfa..3ebf62d87c 100644
--- a/lib/crypto/c_src/crypto.c
+++ b/lib/crypto/c_src/crypto.c
@@ -136,7 +136,7 @@ static ERL_NIF_TERM aes_ctr_encrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM
static ERL_NIF_TERM rand_bytes_1(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM strong_rand_bytes_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM rand_bytes_3(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM strong_rand_uniform_3(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM strong_rand_mpint_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
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[]);
@@ -208,7 +208,7 @@ static ErlNifFunc nif_funcs[] = {
{"rand_bytes", 1, rand_bytes_1},
{"strong_rand_bytes_nif", 1, strong_rand_bytes_nif},
{"rand_bytes", 3, rand_bytes_3},
- {"strong_rand_uniform", 3, strong_rand_uniform_3},
+ {"strong_rand_mpint_nif", 3, strong_rand_mpint_nif},
{"rand_uniform_nif", 2, rand_uniform_nif},
{"mod_exp_nif", 3, mod_exp_nif},
{"dss_verify", 4, dss_verify},
@@ -744,7 +744,7 @@ static ERL_NIF_TERM rand_bytes_3(ErlNifEnv* env, int argc, const ERL_NIF_TERM ar
}
return ret;
}
-static ERL_NIF_TERM strong_rand_uniform_3(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+static ERL_NIF_TERM strong_rand_mpint_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{/* (Bytes, TopMask, BottomMask) */
unsigned bits;
BIGNUM *bn_rand;
@@ -770,16 +770,17 @@ static ERL_NIF_TERM strong_rand_uniform_3(ErlNifEnv* env, int argc, const ERL_NI
}
/* Get a (bits) bit random number */
- if (! BN_rand(bn_rand, bits, top, bottom) ) {
- return enif_make_badarg(env);
+ if (!BN_rand(bn_rand, bits, top, bottom)) {
+ ret = atom_false;
+ }
+ else {
+ /* Copy the bignum into an erlang mpint binary. */
+ dlen = BN_num_bytes(bn_rand);
+ data = enif_make_new_binary(env, dlen+4, &ret);
+ put_int32(data, dlen);
+ BN_bn2bin(bn_rand, data+4);
+ ERL_VALGRIND_MAKE_MEM_DEFINED(data+4, dlen);
}
-
- /* Copy the bignum into an erlang mpint binary. */
- dlen = BN_num_bytes(bn_rand);
- data = enif_make_new_binary(env, dlen+4, &ret);
- put_int32(data, dlen);
- BN_bn2bin(bn_rand, data+4);
- ERL_VALGRIND_MAKE_MEM_DEFINED(data+4, dlen);
BN_free(bn_rand);
return ret;
diff --git a/lib/crypto/doc/src/crypto.xml b/lib/crypto/doc/src/crypto.xml
index 087e9ac00c..dd40378f29 100644
--- a/lib/crypto/doc/src/crypto.xml
+++ b/lib/crypto/doc/src/crypto.xml
@@ -4,7 +4,7 @@
<erlref>
<header>
<copyright>
- <year>1999</year><year>2010</year>
+ <year>1999</year><year>2011</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
@@ -625,6 +625,8 @@ Mpint() = <![CDATA[<<ByteLen:32/integer-big, Bytes:ByteLen/binary>>]]>
result in a binary. Uses a cryptographically secure prng seeded and
periodically mixed with operating system provided entropy. By default
this is the <c>RAND_bytes</c> method from OpenSSL.</p>
+ <p>May throw exception <c>low_entropy</c> in case the random generator
+ failed due to lack of secure "randomness".</p>
</desc>
</func>
<func>
@@ -642,7 +644,7 @@ Mpint() = <![CDATA[<<ByteLen:32/integer-big, Bytes:ByteLen/binary>>]]>
</desc>
</func>
<func>
- <name>strong_rand_uniform(N, Top, Bottom) -> Mpint</name>
+ <name>strong_rand_mpint(N, Top, Bottom) -> Mpint</name>
<fsummary>Generate an N bit random number</fsummary>
<type>
<v>N = non_neg_integer()</v>
@@ -662,6 +664,8 @@ Mpint() = <![CDATA[<<ByteLen:32/integer-big, Bytes:ByteLen/binary>>]]>
N bits long.</p>
<p>If <c>Bottom</c> is 1, then the generated number is
constrained to be odd.</p>
+ <p>May throw exception <c>low_entropy</c> in case the random generator
+ failed due to lack of secure "randomness".</p>
</desc>
</func>
<func>
diff --git a/lib/crypto/doc/src/notes.xml b/lib/crypto/doc/src/notes.xml
index 5e9bda3920..ab1ffa9e5c 100644
--- a/lib/crypto/doc/src/notes.xml
+++ b/lib/crypto/doc/src/notes.xml
@@ -4,7 +4,7 @@
<chapter>
<header>
<copyright>
- <year>1999</year><year>2010</year>
+ <year>1999</year><year>2011</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
@@ -30,6 +30,21 @@
</header>
<p>This document describes the changes made to the Crypto application.</p>
+<section><title>Crypto 2.0.2.2</title>
+
+ <section><title>Improvements and New Features</title>
+ <list>
+ <item>
+ <p>
+ Strengthened random number generation. (Thanks to Geoff Cant)</p>
+ <p>
+ Own Id: OTP-9225</p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
<section><title>Crypto 2.0.2.1</title>
<section><title>Improvements and New Features</title>
diff --git a/lib/crypto/src/crypto.erl b/lib/crypto/src/crypto.erl
index 99b683fce2..cc7b3acc9c 100644
--- a/lib/crypto/src/crypto.erl
+++ b/lib/crypto/src/crypto.erl
@@ -46,7 +46,7 @@
-export([rsa_private_encrypt/3, rsa_public_decrypt/3]).
-export([dh_generate_key/1, dh_generate_key/2, dh_compute_key/3]).
-export([rand_bytes/1, rand_bytes/3, rand_uniform/2]).
--export([strong_rand_bytes/1, strong_rand_uniform/3]).
+-export([strong_rand_bytes/1, strong_rand_mpint/3]).
-export([mod_exp/3, mpint/1, erlint/1]).
%% -export([idea_cbc_encrypt/3, idea_cbc_decrypt/3]).
-export([aes_cbc_128_encrypt/3, aes_cbc_128_decrypt/3]).
@@ -70,7 +70,7 @@
aes_cfb_128_encrypt, aes_cfb_128_decrypt,
rand_bytes,
strong_rand_bytes,
- strong_rand_uniform,
+ strong_rand_mpint,
rand_uniform,
mod_exp,
dss_verify,dss_sign,
@@ -367,11 +367,12 @@ aes_cfb_128_crypt(_Key, _IVec, _Data, _IsEncrypt) -> ?nif_stub.
-spec strong_rand_bytes(non_neg_integer()) -> binary().
-spec rand_uniform(crypto_integer(), crypto_integer()) ->
crypto_integer().
--spec strong_rand_uniform(Bits::non_neg_integer(),
- Top::-1..1,
- Bottom::0..1) -> binary().
+-spec strong_rand_mpint(Bits::non_neg_integer(),
+ Top::-1..1,
+ Bottom::0..1) -> binary().
rand_bytes(_Bytes) -> ?nif_stub.
+
strong_rand_bytes(Bytes) ->
case strong_rand_bytes_nif(Bytes) of
false -> erlang:error(low_entropy);
@@ -380,7 +381,14 @@ strong_rand_bytes(Bytes) ->
strong_rand_bytes_nif(_Bytes) -> ?nif_stub.
rand_bytes(_Bytes, _Topmask, _Bottommask) -> ?nif_stub.
-strong_rand_uniform(_Bytes, _Topmask, _Bottommask) -> ?nif_stub.
+
+strong_rand_mpint(Bits, Top, Bottom) ->
+ case strong_rand_mpint_nif(Bits,Top,Bottom) of
+ false -> erlang:error(low_entropy);
+ Bin -> Bin
+ end.
+strong_rand_mpint_nif(_Bits, _Top, _Bottom) -> ?nif_stub.
+
rand_uniform(From,To) when is_binary(From), is_binary(To) ->
case rand_uniform_nif(From,To) of
diff --git a/lib/crypto/test/crypto_SUITE.erl b/lib/crypto/test/crypto_SUITE.erl
index 1946d01489..854a8b4485 100644
--- a/lib/crypto/test/crypto_SUITE.erl
+++ b/lib/crypto/test/crypto_SUITE.erl
@@ -46,7 +46,7 @@
aes_ctr/1,
mod_exp_test/1,
rand_uniform_test/1,
- strong_rand_uniform_test/1,
+ strong_rand_test/1,
rsa_verify_test/1,
dsa_verify_test/1,
rsa_sign_test/1,
@@ -70,7 +70,7 @@ all() ->
%% sha256, sha256_update, sha512,sha512_update,
des_cbc, aes_cfb, aes_cbc,
aes_cbc_iter, aes_ctr, des_cbc_iter, des_ecb,
- rand_uniform_test, strong_rand_uniform_test,
+ rand_uniform_test, strong_rand_test,
rsa_verify_test, dsa_verify_test, rsa_sign_test,
dsa_sign_test, rsa_encrypt_decrypt, dh, exor_test,
rc4_test, rc4_stream_test, mod_exp_test, blowfish_cfb64,
@@ -712,26 +712,26 @@ rand_uniform_aux_test(N) ->
%%
%%
-strong_rand_uniform_test(doc) ->
- "strong_rand_uniform and strong_random_bytes testing";
-strong_rand_uniform_test(suite) ->
+strong_rand_test(doc) ->
+ "strong_rand_mpint and strong_random_bytes testing";
+strong_rand_test(suite) ->
[];
-strong_rand_uniform_test(Config) when is_list(Config) ->
- strong_rand_uniform_aux_test(180),
+strong_rand_test(Config) when is_list(Config) ->
+ strong_rand_aux_test(180),
?line 10 = byte_size(crypto:strong_rand_bytes(10)).
-strong_rand_uniform_aux_test(0) ->
- ?line t(crypto:strong_rand_uniform(0,0,0) =:= <<0,0,0,0>>),
+strong_rand_aux_test(0) ->
+ ?line t(crypto:strong_rand_mpint(0,0,0) =:= <<0,0,0,0>>),
ok;
-strong_rand_uniform_aux_test(1) ->
- ?line t(crypto:erlint(crypto:strong_rand_uniform(1,0,1)) =:= 1),
- ?line rand_uniform_aux_test(0);
-strong_rand_uniform_aux_test(N) ->
- ?line t(sru_length(crypto:strong_rand_uniform(N,-1,0)) =< N),
- ?line t(sru_length(crypto:strong_rand_uniform(N,0,0)) =:= N),
- ?line t(crypto:erlint(crypto:strong_rand_uniform(N,0,1)) band 1 =:= 1),
- ?line t(crypto:erlint(crypto:strong_rand_uniform(N,1,0)) bsr (N - 2) =:= 2#11),
- ?line rand_uniform_aux_test(N-1).
+strong_rand_aux_test(1) ->
+ ?line t(crypto:erlint(crypto:strong_rand_mpint(1,0,1)) =:= 1),
+ ?line strong_rand_aux_test(0);
+strong_rand_aux_test(N) ->
+ ?line t(sru_length(crypto:strong_rand_mpint(N,-1,0)) =< N),
+ ?line t(sru_length(crypto:strong_rand_mpint(N,0,0)) =:= N),
+ ?line t(crypto:erlint(crypto:strong_rand_mpint(N,0,1)) band 1 =:= 1),
+ ?line t(crypto:erlint(crypto:strong_rand_mpint(N,1,0)) bsr (N - 2) =:= 2#11),
+ ?line strong_rand_aux_test(N-1).
sru_length(Mpint) ->
I = crypto:erlint(Mpint),
@@ -1126,7 +1126,7 @@ worker_loop(0, _) ->
ok;
worker_loop(N, Config) ->
Funcs = { md5, md5_update, md5_mac, md5_mac_io, sha, sha_update, des_cbc,
- aes_cfb, aes_cbc, des_cbc_iter, rand_uniform_test,
+ aes_cfb, aes_cbc, des_cbc_iter, rand_uniform_test, strong_rand_test,
rsa_verify_test, exor_test, rc4_test, rc4_stream_test, mod_exp_test },
F = element(random:uniform(size(Funcs)),Funcs),
diff --git a/lib/crypto/vsn.mk b/lib/crypto/vsn.mk
index e2d6fd0b37..740c68d8fa 100644
--- a/lib/crypto/vsn.mk
+++ b/lib/crypto/vsn.mk
@@ -1 +1 @@
-CRYPTO_VSN = 2.0.2.1
+CRYPTO_VSN = 2.0.2.2
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 01:20:57 +0000