Commit 81362a4e authored by Steven Fackler's avatar Steven Fackler
Browse files

scrypt support

Closes #586
parent b5b0a2ec
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+1 −0
Original line number Diff line number Diff line
@@ -98,6 +98,7 @@ extern {
    pub fn EVP_CIPHER_key_length(cipher: *const EVP_CIPHER) -> c_int;
    pub fn EVP_CIPHER_block_size(cipher: *const EVP_CIPHER) -> c_int;
    pub fn EVP_CIPHER_iv_length(cipher: *const EVP_CIPHER) -> c_int;
    pub fn EVP_PBE_scrypt(pass: *const c_char, passlen: size_t, salt: *const c_uchar, saltlen: size_t, N: u64, r: u64, p: u64, maxmem: u64, key: *mut c_uchar, keylen: size_t) -> c_int;
    pub fn DSA_get0_pqg(d: *const ::DSA,
                        p: *mut *const ::BIGNUM,
                        q: *mut *const ::BIGNUM,
+56 −6
Original line number Diff line number Diff line
@@ -96,8 +96,38 @@ pub fn pbkdf2_hmac(pass: &[u8],
    }
}

/// Derives a key from a password and salt using the scrypt algorithm.
///
/// Requires the `v110` feature and OpenSSL 1.1.0.
#[cfg(all(feature = "v110", ossl110))]
pub fn scrypt(pass: &[u8],
              salt: &[u8],
              n: u64,
              r: u64,
              p: u64,
              maxmem: u64,
              key: &mut [u8])
              -> Result<(), ErrorStack> {
    unsafe {
        ffi::init();
        cvt(ffi::EVP_PBE_scrypt(pass.as_ptr() as *const _,
                                pass.len(),
                                salt.as_ptr() as *const _,
                                salt.len(),
                                n,
                                r,
                                p,
                                maxmem,
                                key.as_mut_ptr() as *mut _,
                                key.len()))
            .map(|_| ())
    }
}

#[cfg(test)]
mod tests {
    use hex::ToHex;

    use hash::MessageDigest;
    use symm::Cipher;

@@ -110,7 +140,8 @@ mod tests {
        super::pbkdf2_hmac(b"passwd", b"salt", 1, MessageDigest::sha256(), &mut buf).unwrap();
        assert_eq!(buf,
                   &[0x55_u8, 0xac_u8, 0x04_u8, 0x6e_u8, 0x56_u8, 0xe3_u8, 0x08_u8, 0x9f_u8,
                     0xec_u8, 0x16_u8, 0x91_u8, 0xc2_u8, 0x25_u8, 0x44_u8, 0xb6_u8, 0x05_u8][..]);
                     0xec_u8, 0x16_u8, 0x91_u8, 0xc2_u8, 0x25_u8, 0x44_u8, 0xb6_u8, 0x05_u8]
                        [..]);

        super::pbkdf2_hmac(b"Password",
                           b"NaCl",
@@ -120,7 +151,8 @@ mod tests {
            .unwrap();
        assert_eq!(buf,
                   &[0x4d_u8, 0xdc_u8, 0xd8_u8, 0xf6_u8, 0x0b_u8, 0x98_u8, 0xbe_u8, 0x21_u8,
                     0x83_u8, 0x0c_u8, 0xee_u8, 0x5e_u8, 0xf2_u8, 0x27_u8, 0x01_u8, 0xf9_u8][..]);
                     0x83_u8, 0x0c_u8, 0xee_u8, 0x5e_u8, 0xf2_u8, 0x27_u8, 0x01_u8, 0xf9_u8]
                        [..]);
    }

    // Test vectors from
@@ -138,7 +170,8 @@ mod tests {
                     0xf8_u8, 0x14_u8, 0x8e_u8, 0x52_u8, 0x45_u8, 0x2b_u8, 0x22_u8, 0x16_u8,
                     0xb2_u8, 0xb8_u8, 0x09_u8, 0x8b_u8, 0x76_u8, 0x1f_u8, 0xc6_u8, 0x33_u8,
                     0x60_u8, 0x60_u8, 0xa0_u8, 0x9f_u8, 0x76_u8, 0x41_u8, 0x5e_u8, 0x9f_u8,
                     0x71_u8, 0xea_u8, 0x47_u8, 0xf9_u8, 0xe9_u8, 0x06_u8, 0x43_u8, 0x06_u8][..]);
                     0x71_u8, 0xea_u8, 0x47_u8, 0xf9_u8, 0xe9_u8, 0x06_u8, 0x43_u8, 0x06_u8]
                        [..]);

        super::pbkdf2_hmac(b"pass\0word",
                           b"sa\0lt",
@@ -154,7 +187,8 @@ mod tests {
                     0xe7_u8, 0x66_u8, 0x04_u8, 0xa4_u8, 0x9a_u8, 0xf0_u8, 0x8f_u8, 0xe7_u8,
                     0xc9_u8, 0xf5_u8, 0x71_u8, 0x56_u8, 0xc8_u8, 0x79_u8, 0x09_u8, 0x96_u8,
                     0xb2_u8, 0x0f_u8, 0x06_u8, 0xbc_u8, 0x53_u8, 0x5e_u8, 0x5a_u8, 0xb5_u8,
                     0x44_u8, 0x0d_u8, 0xf7_u8, 0xe8_u8, 0x78_u8, 0x29_u8, 0x6f_u8, 0xa7_u8][..]);
                     0x44_u8, 0x0d_u8, 0xf7_u8, 0xe8_u8, 0x78_u8, 0x29_u8, 0x6f_u8, 0xa7_u8]
                        [..]);

        super::pbkdf2_hmac(b"passwordPASSWORDpassword",
                           b"salt\0\0\0",
@@ -170,8 +204,10 @@ mod tests {
                     0x1b_u8, 0x6f_u8, 0x0b_u8, 0x2f_u8, 0xc3_u8, 0xad_u8, 0xda_u8, 0x50_u8,
                     0x54_u8, 0x12_u8, 0xe7_u8, 0x9d_u8, 0x89_u8, 0x00_u8, 0x56_u8, 0xc6_u8,
                     0x2e_u8, 0x52_u8, 0x4c_u8, 0x7d_u8, 0x51_u8, 0x15_u8, 0x4b_u8, 0x1a_u8,
                     0x85_u8, 0x34_u8, 0x57_u8, 0x5b_u8, 0xd0_u8, 0x2d_u8, 0xee_u8, 0x39_u8][..]);
                     0x85_u8, 0x34_u8, 0x57_u8, 0x5b_u8, 0xd0_u8, 0x2d_u8, 0xee_u8, 0x39_u8]
                        [..]);
    }

    #[test]
    fn bytes_to_key() {
        let salt = [16_u8, 34_u8, 19_u8, 23_u8, 141_u8, 4_u8, 207_u8, 221_u8];
@@ -194,10 +230,24 @@ mod tests {
                                       MessageDigest::sha1(),
                                       &data,
                                       Some(&salt),
                                       1).unwrap(),
                                       1)
                       .unwrap(),
                   super::KeyIvPair {
                       key: expected_key,
                       iv: Some(expected_iv),
                   });
    }

    #[test]
    #[cfg(all(feature = "v110", ossl110))]
    fn scrypt() {
        let pass = "pleaseletmein";
        let salt = "SodiumChloride";
        let expected = "7023bdcb3afd7348461c06cd81fd38ebfda8fbba904f8e3ea9b543f6545da1f2d5432955613\
                        f0fcf62d49705242a9af9e61e85dc0d651e40dfcf017b45575887";

        let mut actual = [0; 64];
        super::scrypt(pass.as_bytes(), salt.as_bytes(), 16384, 8, 1, 0, &mut actual).unwrap();
        assert_eq!((&actual[..]).to_hex(), expected);
    }
}