Add des_ecb_encrypt/2 and des_ecb_decrypt/2 to crypto module

slfritchie · Mar 1, 2010 · 544ed56 · 544ed56
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commit 544ed56
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diff --git a/lib/crypto/c_src/crypto_drv.c b/lib/crypto/c_src/crypto_drv.c
@@ -239,12 +239,15 @@ static ErlDrvEntry crypto_driver_entry = {
 #define DRV_BF_CBC_ENCRYPT       64
 #define DRV_BF_CBC_DECRYPT       65
 
+#define DRV_ECB_DES_ENCRYPT     66
+#define DRV_ECB_DES_DECRYPT     67
+
 /* #define DRV_CBC_IDEA_ENCRYPT    34 */
 /* #define DRV_CBC_IDEA_DECRYPT    35 */
 
 /* Not DRV_DH_GENERATE_PARAMS DRV_DH_CHECK
  * Calc RSA_VERIFY_*  and RSA_SIGN once */
-#define NUM_CRYPTO_FUNCS        46
+#define NUM_CRYPTO_FUNCS        48
 
 #define MD5_CTX_LEN     (sizeof(MD5_CTX))
 #define MD5_LEN         16
@@ -538,6 +541,21 @@ static int crypto_control(ErlDrvData drv_data, unsigned int command, char *buf,
                          (command == DRV_CBC_DES_ENCRYPT));
         return dlen;
 
+    case DRV_ECB_DES_ENCRYPT:
+    case DRV_ECB_DES_DECRYPT:
+        /* buf = key[8] data */
+        dlen = len - 8;
+        if (dlen != 8)
+            return -1;
+        des_key = (const_DES_cblock*) buf;
+        des_dbuf = (unsigned char *) (buf + 8);
+        bin = return_binary(rbuf,rlen,dlen);
+        if (bin==NULL) return -1;
+        DES_set_key(des_key, &schedule);
+        DES_ecb_encrypt((const_DES_cblock*) des_dbuf, (DES_cblock*) bin, &schedule,
+                        (command == DRV_ECB_DES_ENCRYPT));
+        return dlen;
+
     case DRV_BF_ECB_ENCRYPT:
     case DRV_BF_ECB_DECRYPT:
     {

diff --git a/lib/crypto/doc/src/crypto.xml b/lib/crypto/doc/src/crypto.xml
@@ -338,6 +338,33 @@ Mpint() = <![CDATA[<<ByteLen:32/integer-big, Bytes:ByteLen/binary>>]]>
       </desc>
     </func>
 
+    <func>
+      <name>des_ecb_encrypt(Key, Text) -> Cipher</name>
+      <fsummary>Encrypt <c>Text</c>according to DES in ECB mode</fsummary>
+      <type>
+        <v>Key = Text = iolist() | binary()</v>
+        <v>Cipher = binary()</v>
+      </type>
+      <desc>
+        <p>Encrypts <c>Text</c> according to DES in ECB mode.
+          <c>Key</c> is the DES key. The lengths of <c>Key</c> and
+          <c>Text</c> must be 64 bits (8 bytes).</p>
+      </desc>
+    </func>
+    <func>
+      <name>des_ecb_decrypt(Key, Cipher) -> Text</name>
+      <fsummary>Decrypt <c>Cipher</c>according to DES in ECB mode</fsummary>
+      <type>
+        <v>Key = Cipher = iolist() | binary()</v>
+        <v>Text = binary()</v>
+      </type>
+      <desc>
+        <p>Decrypts <c>Cipher</c> according to DES in ECB mode.
+          <c>Key</c> is the DES key. The lengths of <c>Key</c> and
+          <c>Cipher</c> must be 64 bits (8 bytes).</p>
+      </desc>
+    </func>
+
     <func>
       <name>blowfish_ecb_encrypt(Key, Text) -> Cipher</name>
       <fsummary>Encrypt the first 64 bits of <c>Text</c> using Blowfish in ECB mode</fsummary>

diff --git a/lib/crypto/src/crypto.erl b/lib/crypto/src/crypto.erl
@@ -29,6 +29,7 @@
 %-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_96/2]).
 -export([des_cbc_encrypt/3, des_cbc_decrypt/3, des_cbc_ivec/1]).
+-export([des_ecb_encrypt/2, des_ecb_decrypt/2]).
 -export([des3_cbc_encrypt/5, des3_cbc_decrypt/5]).
 -export([blowfish_ecb_encrypt/2, blowfish_ecb_decrypt/2]).
 -export([blowfish_cbc_encrypt/3, blowfish_cbc_decrypt/3]).
@@ -124,6 +125,9 @@
 -define(BF_CBC_ENCRYPT,   64).
 -define(BF_CBC_DECRYPT,   65).
 
+-define(DES_ECB_ENCRYPT, 66).
+-define(DES_ECB_DECRYPT, 67).
+
 %% -define(IDEA_CBC_ENCRYPT, 34).
 %% -define(IDEA_CBC_DECRYPT, 35).
 
@@ -135,6 +139,7 @@
 		    md5_mac,  md5_mac_96,
 		    sha_mac,  sha_mac_96,
 		    des_cbc_encrypt, des_cbc_decrypt,
+		    des_ecb_encrypt, des_ecb_decrypt,
 		    des_ede3_cbc_encrypt, des_ede3_cbc_decrypt,
 		    aes_cfb_128_encrypt, aes_cfb_128_decrypt,
 		    rand_bytes,
@@ -294,6 +299,15 @@ des_cbc_ivec(Data) when is_binary(Data) ->
 des_cbc_ivec(Data) when is_list(Data) ->
     des_cbc_ivec(list_to_binary(Data)).
 
+%%
+%% DES - in electronic codebook mode (ECB)
+%%
+des_ecb_encrypt(Key, Data) ->
+    control(?DES_ECB_ENCRYPT, [Key, Data]).
+
+des_ecb_decrypt(Key, Data) ->
+    control(?DES_ECB_DECRYPT, [Key, Data]).
+
 %%
 %% DES3 - in cipher block chaining mode (CBC)
 %%

diff --git a/lib/crypto/test/crypto_SUITE.erl b/lib/crypto/test/crypto_SUITE.erl
@@ -40,6 +40,7 @@
 	 md5_mac_io/1,
 	 des_cbc/1,
 	 des_cbc_iter/1,
+	 des_ecb/1,
 	 aes_cfb/1,
 	 aes_cbc/1,
 	 aes_cbc_iter/1,
@@ -78,6 +79,7 @@ all(suite) ->
 		 aes_cbc,
 		 aes_cbc_iter,
 		 des_cbc_iter,
+		 des_ecb,
 		 rand_uniform_test,
 		 rsa_verify_test,
 		 dsa_verify_test,
@@ -443,6 +445,28 @@ des_cbc_iter(Config) when is_list(Config) ->
     ?line m(Cipher, hexstr2bin("e5c7cdde872bf27c43e934008c389c"
 			             "0f683788499a7c05f6")).
 
+%%
+%%
+des_ecb(doc) ->
+    "Encrypt and decrypt according to ECB DES and check the result. "
+    "Example are from FIPS-81.";
+des_ecb(suite) ->
+    [];
+des_ecb(Config) when is_list(Config) ->
+    ?line Key =  hexstr2bin("0123456789abcdef"),
+    ?line Cipher1 = crypto:des_ecb_encrypt(Key, "Now is t"),
+    ?line m(Cipher1, hexstr2bin("3fa40e8a984d4815")),
+    ?line Cipher2 = crypto:des_ecb_encrypt(Key, "he time "),
+    ?line m(Cipher2, hexstr2bin("6a271787ab8883f9")),
+    ?line Cipher3 = crypto:des_ecb_encrypt(Key, "for all "),
+    ?line m(Cipher3, hexstr2bin("893d51ec4b563b53")),
+    ?line Cipher4 = crypto:des_ecb_decrypt(Key, hexstr2bin("3fa40e8a984d4815")),
+    ?line m(Cipher4, <<"Now is t">>),
+    ?line Cipher5 = crypto:des_ecb_decrypt(Key, hexstr2bin("6a271787ab8883f9")),
+    ?line m(Cipher5, <<"he time ">>),
+    ?line Cipher6 = crypto:des_ecb_decrypt(Key, hexstr2bin("893d51ec4b563b53")),
+    ?line m(Cipher6, <<"for all ">>).
+
 %%
 %%
 aes_cfb(doc) ->