Merge pull request #530 from 0xa/blowfish

Add Blowfish support

2 files changed, 94 insertions, 0 deletions

diff --git a/openssl-sys/src/lib.rs b/openssl-sys/src/lib.rs
index 8e427c7a..3ac3c2c2 100644
--- a/openssl-sys/src/lib.rs
+++ b/openssl-sys/src/lib.rs
@@ -1445,6 +1445,10 @@ extern {
     pub fn EVP_aes_256_cfb1() -> *const EVP_CIPHER;
     pub fn EVP_aes_256_cfb128() -> *const EVP_CIPHER;
     pub fn EVP_aes_256_cfb8() -> *const EVP_CIPHER;
+    pub fn EVP_bf_cbc() -> *const EVP_CIPHER;
+    pub fn EVP_bf_ecb() -> *const EVP_CIPHER;
+    pub fn EVP_bf_cfb64() -> *const EVP_CIPHER;
+    pub fn EVP_bf_ofb() -> *const EVP_CIPHER;
     pub fn EVP_rc4() -> *const EVP_CIPHER;
 
     pub fn EVP_des_cbc() -> *const EVP_CIPHER;
diff --git a/openssl/src/symm.rs b/openssl/src/symm.rs
index f94a8d70..d2cb0cc8 100644
--- a/openssl/src/symm.rs
+++ b/openssl/src/symm.rs
@@ -80,6 +80,22 @@ impl Cipher {
         unsafe { Cipher(ffi::EVP_aes_256_gcm()) }
     }
 
+    pub fn bf_cbc() -> Cipher {
+        unsafe { Cipher(ffi::EVP_bf_cbc()) }
+    }
+
+    pub fn bf_ecb() -> Cipher {
+        unsafe { Cipher(ffi::EVP_bf_ecb()) }
+    }
+
+    pub fn bf_cfb64() -> Cipher {
+        unsafe { Cipher(ffi::EVP_bf_cfb64()) }
+    }
+
+    pub fn bf_ofb() -> Cipher {
+        unsafe { Cipher(ffi::EVP_bf_ofb()) }
+    }
+
     pub fn des_cbc() -> Cipher {
         unsafe { Cipher(ffi::EVP_des_cbc()) }
     }
@@ -509,6 +525,35 @@ mod tests {
         }
     }
 
+    fn cipher_test_nopad(ciphertype: super::Cipher, pt: &str, ct: &str, key: &str, iv: &str) {
+        let pt = Vec::from_hex(pt).unwrap();
+        let ct = Vec::from_hex(ct).unwrap();
+        let key = Vec::from_hex(key).unwrap();
+        let iv = Vec::from_hex(iv).unwrap();
+
+        let computed = {
+            let mut c = Crypter::new(ciphertype, Mode::Decrypt, &key, Some(&iv)).unwrap();
+            c.pad(false);
+            let mut out = vec![0; ct.len() + ciphertype.block_size()];
+            let count = c.update(&ct, &mut out).unwrap();
+            let rest = c.finalize(&mut out[count..]).unwrap();
+            out.truncate(count + rest);
+            out
+        };
+        let expected = pt;
+
+        if computed != expected {
+            println!("Computed: {}", computed.to_hex());
+            println!("Expected: {}", expected.to_hex());
+            if computed.len() != expected.len() {
+                println!("Lengths differ: {} in computed vs {} expected",
+                         computed.len(),
+                         expected.len());
+            }
+            panic!("test failure");
+        }
+    }
+
     #[test]
     fn test_rc4() {
 
@@ -616,6 +661,51 @@ mod tests {
     }
 
     #[test]
+    fn test_bf_cbc() {
+        // https://www.schneier.com/code/vectors.txt
+
+        let pt = "37363534333231204E6F77206973207468652074696D6520666F722000000000";
+        let ct = "6B77B4D63006DEE605B156E27403979358DEB9E7154616D959F1652BD5FF92CC";
+        let key = "0123456789ABCDEFF0E1D2C3B4A59687";
+        let iv = "FEDCBA9876543210";
+
+        cipher_test_nopad(super::Cipher::bf_cbc(), pt, ct, key, iv);
+    }
+
+    #[test]
+    fn test_bf_ecb() {
+
+        let pt = "5CD54CA83DEF57DA";
+        let ct = "B1B8CC0B250F09A0";
+        let key = "0131D9619DC1376E";
+        let iv = "0000000000000000";
+
+        cipher_test_nopad(super::Cipher::bf_ecb(), pt, ct, key, iv);
+    }
+
+    #[test]
+    fn test_bf_cfb64() {
+
+        let pt = "37363534333231204E6F77206973207468652074696D6520666F722000";
+        let ct = "E73214A2822139CAF26ECF6D2EB9E76E3DA3DE04D1517200519D57A6C3";
+        let key = "0123456789ABCDEFF0E1D2C3B4A59687";
+        let iv = "FEDCBA9876543210";
+
+        cipher_test_nopad(super::Cipher::bf_cfb64(), pt, ct, key, iv);
+    }
+
+    #[test]
+    fn test_bf_ofb() {
+
+        let pt = "37363534333231204E6F77206973207468652074696D6520666F722000";
+        let ct = "E73214A2822139CA62B343CC5B65587310DD908D0C241B2263C2CF80DA";
+        let key = "0123456789ABCDEFF0E1D2C3B4A59687";
+        let iv = "FEDCBA9876543210";
+
+        cipher_test_nopad(super::Cipher::bf_ofb(), pt, ct, key, iv);
+    }
+
+    #[test]
     fn test_des_cbc() {
 
         let pt = "54686973206973206120746573742e";