Add test cases for AES OFB block mode
Adds test cases from NIST SP800-38A for OFB block mode to AES-128/192/256, for
the configuration of MBEDTLS_CIPHER_MODE_OFB.
diff --git a/tests/Makefile b/tests/Makefile
index 8efecf3..e68c1f3 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -46,7 +46,8 @@
endif
APPS = test_suite_aes.ecb$(EXEXT) test_suite_aes.cbc$(EXEXT) \
- test_suite_aes.cfb$(EXEXT) test_suite_aes.rest$(EXEXT) \
+ test_suite_aes.cfb$(EXEXT) test_suite_aes.ofb$(EXEXT) \
+ test_suite_aes.rest$(EXEXT) \
test_suite_arc4$(EXEXT) test_suite_asn1write$(EXEXT) \
test_suite_base64$(EXEXT) test_suite_blowfish$(EXEXT) \
test_suite_camellia$(EXEXT) test_suite_ccm$(EXEXT) \
@@ -110,6 +111,10 @@
echo " Gen $@"
perl scripts/generate_code.pl suites test_suite_aes test_suite_aes.cfb
+test_suite_aes.ofb.c : suites/test_suite_aes.function suites/test_suite_aes.ofb.data scripts/generate_code.pl suites/helpers.function suites/main_test.function
+ echo " Gen $@"
+ perl scripts/generate_code.pl suites test_suite_aes test_suite_aes.ofb
+
test_suite_aes.rest.c : suites/test_suite_aes.function suites/test_suite_aes.rest.data scripts/generate_code.pl suites/helpers.function suites/main_test.function
echo " Gen $@"
perl scripts/generate_code.pl suites test_suite_aes test_suite_aes.rest
@@ -210,6 +215,10 @@
echo " CC $<"
$(CC) $(LOCAL_CFLAGS) $(CFLAGS) $< $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@
+test_suite_aes.ofb$(EXEXT): test_suite_aes.ofb.c $(DEP)
+ echo " CC $<"
+ $(CC) $(LOCAL_CFLAGS) $(CFLAGS) $< $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@
+
test_suite_aes.rest$(EXEXT): test_suite_aes.rest.c $(DEP)
echo " CC $<"
$(CC) $(LOCAL_CFLAGS) $(CFLAGS) $< $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@
diff --git a/tests/suites/test_suite_aes.function b/tests/suites/test_suite_aes.function
index c5f0eaa..e1792dd 100644
--- a/tests/suites/test_suite_aes.function
+++ b/tests/suites/test_suite_aes.function
@@ -289,6 +289,58 @@
}
/* END_CASE */
+/* BEGIN_CASE depends_on:MBEDTLS_CIPHER_MODE_OFB */
+void aes_encrypt_ofb( int fragment_size, char *hex_key_string,
+ char *hex_iv_string, char *hex_src_string,
+ char *hex_dst_string )
+{
+ unsigned char key_str[100];
+ unsigned char iv_str[100];
+ unsigned char src_str[200];
+ unsigned char dst_str[200];
+ unsigned char output[200];
+ mbedtls_aes_context ctx;
+ size_t iv_offset = 0;
+ int in_buffer_len;
+ unsigned char* src_str_next;
+ int key_len, iv_len;
+
+ memset(key_str, 0x00, 100);
+ memset(iv_str, 0x00, 100);
+ memset(src_str, 0x00, 200);
+ memset(dst_str, 0x00, 200);
+ memset(output, 0x00, 200);
+ mbedtls_aes_init( &ctx );
+
+ key_len = unhexify( key_str, hex_key_string );
+ iv_len = unhexify( iv_str, hex_iv_string );
+ in_buffer_len = unhexify( src_str, hex_src_string );
+
+ mbedtls_aes_setkey_enc( &ctx, key_str, key_len * 8 );
+ src_str_next = src_str;
+
+ while( in_buffer_len > 0 )
+ {
+ TEST_ASSERT( mbedtls_aes_crypt_ofb( &ctx, fragment_size, &iv_offset,
+ iv_str, src_str_next, output ) == 0 );
+
+ hexify( dst_str, output, fragment_size );
+ TEST_ASSERT( strncmp( (char *) dst_str, hex_dst_string,
+ ( 2 * fragment_size) ) == 0 );
+
+ in_buffer_len -= fragment_size;
+ hex_dst_string += ( fragment_size * 2 );
+ src_str_next += fragment_size;
+
+ if( in_buffer_len < fragment_size )
+ fragment_size = in_buffer_len;
+ }
+
+exit:
+ mbedtls_aes_free( &ctx );
+}
+/* END_CASE */
+
/* BEGIN_CASE depends_on:MBEDTLS_SELF_TEST */
void aes_selftest()
{
diff --git a/tests/suites/test_suite_aes.ofb.data b/tests/suites/test_suite_aes.ofb.data
new file mode 100644
index 0000000..4b9d80e
--- /dev/null
+++ b/tests/suites/test_suite_aes.ofb.data
@@ -0,0 +1,35 @@
+# NIST Special Publication 800-38A
+# Recommendation for Block Cipher Modes of Operation
+# Test Vectors - Appendix F, Section F.4
+OFB-AES128.Encrypt - Single block
+depends_on:MBEDTLS_CIPHER_MODE_OFB
+aes_encrypt_ofb:16:"2b7e151628aed2a6abf7158809cf4f3c":"000102030405060708090a0b0c0d0e0f":"6bc1bee22e409f96e93d7e117393172a":"3b3fd92eb72dad20333449f8e83cfb4a"
+
+OFB-AES128.Encrypt - Partial blocks - 7 bytes
+depends_on:MBEDTLS_CIPHER_MODE_OFB
+aes_encrypt_ofb:5:"2b7e151628aed2a6abf7158809cf4f3c":"000102030405060708090a0b0c0d0e0f":"6bc1bee22e409f96e93d7e117393172aae2d8a571e03ac9c9eb76fac45af8e5130c81c46a35ce411e5fbc1191a0a52eff69f2445df4f9b17ad2b417be66c3710":"3b3fd92eb72dad20333449f8e83cfb4a7789508d16918f03f53c52dac54ed8259740051e9c5fecf64344f7a82260edcc304c6528f659c77866a510d9c1d6ae5e"
+
+OFB-AES128.Encrypt - Test NIST SP800-38A - F.4.1
+depends_on:MBEDTLS_CIPHER_MODE_OFB
+aes_encrypt_ofb:16:"2b7e151628aed2a6abf7158809cf4f3c":"000102030405060708090a0b0c0d0e0f":"6bc1bee22e409f96e93d7e117393172aae2d8a571e03ac9c9eb76fac45af8e5130c81c46a35ce411e5fbc1191a0a52eff69f2445df4f9b17ad2b417be66c3710":"3b3fd92eb72dad20333449f8e83cfb4a7789508d16918f03f53c52dac54ed8259740051e9c5fecf64344f7a82260edcc304c6528f659c77866a510d9c1d6ae5e"
+
+OFB-AES128.Decrypt - Test NIST SP800-38A - F.4.2
+depends_on:MBEDTLS_CIPHER_MODE_OFB
+aes_encrypt_ofb:16:"2b7e151628aed2a6abf7158809cf4f3c":"000102030405060708090a0b0c0d0e0f":"3b3fd92eb72dad20333449f8e83cfb4a7789508d16918f03f53c52dac54ed8259740051e9c5fecf64344f7a82260edcc304c6528f659c77866a510d9c1d6ae5e":"6bc1bee22e409f96e93d7e117393172aae2d8a571e03ac9c9eb76fac45af8e5130c81c46a35ce411e5fbc1191a0a52eff69f2445df4f9b17ad2b417be66c3710"
+
+OFB-AES192.Encrypt - Test NIST SP800-38A - F.4.3
+depends_on:MBEDTLS_CIPHER_MODE_OFB
+aes_encrypt_ofb:16:"8e73b0f7da0e6452c810f32b809079e562f8ead2522c6b7b":"000102030405060708090a0b0c0d0e0f":"6bc1bee22e409f96e93d7e117393172aae2d8a571e03ac9c9eb76fac45af8e5130c81c46a35ce411e5fbc1191a0a52eff69f2445df4f9b17ad2b417be66c3710":"cdc80d6fddf18cab34c25909c99a4174fcc28b8d4c63837c09e81700c11004018d9a9aeac0f6596f559c6d4daf59a5f26d9f200857ca6c3e9cac524bd9acc92a"
+
+OFB-AES192.Decrypt - Test NIST SP800-38A - F.4.4
+depends_on:MBEDTLS_CIPHER_MODE_OFB
+aes_encrypt_ofb:16:"8e73b0f7da0e6452c810f32b809079e562f8ead2522c6b7b":"000102030405060708090a0b0c0d0e0f":"cdc80d6fddf18cab34c25909c99a4174fcc28b8d4c63837c09e81700c11004018d9a9aeac0f6596f559c6d4daf59a5f26d9f200857ca6c3e9cac524bd9acc92a":"6bc1bee22e409f96e93d7e117393172aae2d8a571e03ac9c9eb76fac45af8e5130c81c46a35ce411e5fbc1191a0a52eff69f2445df4f9b17ad2b417be66c3710"
+
+OFB-AES256.Encrypt - Test NIST SP800-38A - F.4.5
+depends_on:MBEDTLS_CIPHER_MODE_OFB
+aes_encrypt_ofb:16:"603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4":"000102030405060708090a0b0c0d0e0f":"6bc1bee22e409f96e93d7e117393172aae2d8a571e03ac9c9eb76fac45af8e5130c81c46a35ce411e5fbc1191a0a52eff69f2445df4f9b17ad2b417be66c3710":"dc7e84bfda79164b7ecd8486985d38604febdc6740d20b3ac88f6ad82a4fb08d71ab47a086e86eedf39d1c5bba97c4080126141d67f37be8538f5a8be740e484"
+
+OFB-AES256.Decrypt - Test NIST SP800-38A - F.4.6
+depends_on:MBEDTLS_CIPHER_MODE_OFB
+aes_encrypt_ofb:16:"603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4":"000102030405060708090a0b0c0d0e0f":"dc7e84bfda79164b7ecd8486985d38604febdc6740d20b3ac88f6ad82a4fb08d71ab47a086e86eedf39d1c5bba97c4080126141d67f37be8538f5a8be740e484":"6bc1bee22e409f96e93d7e117393172aae2d8a571e03ac9c9eb76fac45af8e5130c81c46a35ce411e5fbc1191a0a52eff69f2445df4f9b17ad2b417be66c3710"
+