Prepare rustcrypto to merge into rust-openssl

1 files changed, 0 insertions, 426 deletions

diff --git a/src/crypto/pkey.rs b/src/crypto/pkey.rs
deleted file mode 100644
index b8206d4e..00000000
--- a/src/crypto/pkey.rs
+++ /dev/null
@@ -1,426 +0,0 @@
-use std::cast;
-use std::libc::{c_char, c_int, c_uint};
-use std::libc;
-use std::ptr;
-use std::vec;
-use hash::{HashType, MD5, SHA1, SHA224, SHA256, SHA384, SHA512};
-
-#[allow(non_camel_case_types)]
-pub type EVP_PKEY = *libc::c_void;
-
-#[allow(non_camel_case_types)]
-pub type RSA = *libc::c_void;
-
-#[link(name = "crypto")]
-extern {
-    fn EVP_PKEY_new() -> *EVP_PKEY;
-    fn EVP_PKEY_free(k: *EVP_PKEY);
-    fn EVP_PKEY_assign(pkey: *EVP_PKEY, typ: c_int, key: *c_char) -> c_int;
-    fn EVP_PKEY_get1_RSA(k: *EVP_PKEY) -> *RSA;
-
-    fn i2d_PublicKey(k: *EVP_PKEY, buf: **mut u8) -> c_int;
-    fn d2i_PublicKey(t: c_int, k: **EVP_PKEY, buf: **u8, len: c_uint) -> *EVP_PKEY;
-    fn i2d_PrivateKey(k: *EVP_PKEY, buf: **mut u8) -> c_int;
-    fn d2i_PrivateKey(t: c_int, k: **EVP_PKEY, buf: **u8, len: c_uint) -> *EVP_PKEY;
-
-    fn RSA_generate_key(modsz: c_uint, e: c_uint, cb: *u8, cbarg: *u8) -> *RSA;
-    fn RSA_size(k: *RSA) -> c_uint;
-
-    fn RSA_public_encrypt(flen: c_uint, from: *u8, to: *mut u8, k: *RSA,
-                          pad: c_int) -> c_int;
-    fn RSA_private_decrypt(flen: c_uint, from: *u8, to: *mut u8, k: *RSA,
-                           pad: c_int) -> c_int;
-    fn RSA_sign(t: c_int, m: *u8, mlen: c_uint, sig: *mut u8, siglen: *mut c_uint,
-                k: *RSA) -> c_int;
-    fn RSA_verify(t: c_int, m: *u8, mlen: c_uint, sig: *u8, siglen: c_uint,
-                  k: *RSA) -> c_int;
-}
-
-enum Parts {
-    Neither,
-    Public,
-    Both
-}
-
-/// Represents a role an asymmetric key might be appropriate for.
-pub enum Role {
-    Encrypt,
-    Decrypt,
-    Sign,
-    Verify
-}
-
-/// Type of encryption padding to use.
-pub enum EncryptionPadding {
-    OAEP,
-    PKCS1v15
-}
-
-fn openssl_padding_code(padding: EncryptionPadding) -> c_int {
-    match padding {
-        OAEP => 4,
-        PKCS1v15 => 1
-    }
-}
-
-fn openssl_hash_nid(hash: HashType) -> c_int {
-    match hash {
-        MD5    => 4,   // NID_md5,
-        SHA1   => 64,  // NID_sha1
-        SHA224 => 675, // NID_sha224
-        SHA256 => 672, // NID_sha256
-        SHA384 => 673, // NID_sha384
-        SHA512 => 674, // NID_sha512
-    }
-}
-
-pub struct PKey {
-    priv evp: *EVP_PKEY,
-    priv parts: Parts,
-}
-
-/// Represents a public key, optionally with a private key attached.
-impl PKey {
-    pub fn new() -> PKey {
-        unsafe {
-            PKey {
-                evp: EVP_PKEY_new(),
-                parts: Neither,
-            }
-        }
-    }
-
-    fn _tostr(&self, f: extern "C" unsafe fn(*EVP_PKEY, **mut u8) -> c_int) -> ~[u8] {
-        unsafe {
-            let len = f(self.evp, ptr::null());
-            if len < 0 as c_int { return ~[]; }
-            let mut s = vec::from_elem(len as uint, 0u8);
-
-            let r = f(self.evp, &s.as_mut_ptr());
-
-            s.truncate(r as uint);
-            s
-        }
-    }
-
-    fn _fromstr(&mut self, s: &[u8], f: extern "C" unsafe fn(c_int, **EVP_PKEY, **u8, c_uint) -> *EVP_PKEY) {
-        unsafe {
-            let evp = ptr::null();
-            f(6 as c_int, &evp, &s.as_ptr(), s.len() as c_uint);
-            self.evp = evp;
-        }
-    }
-
-    pub fn gen(&mut self, keysz: uint) {
-        unsafe {
-            let rsa = RSA_generate_key(
-                keysz as c_uint,
-                65537u as c_uint,
-                ptr::null(),
-                ptr::null()
-            );
-
-            // XXX: 6 == NID_rsaEncryption
-            EVP_PKEY_assign(
-                self.evp,
-                6 as c_int,
-                cast::transmute(rsa));
-
-            self.parts = Both;
-        }
-    }
-
-    /**
-     * Returns a serialized form of the public key, suitable for load_pub().
-     */
-    pub fn save_pub(&self) -> ~[u8] {
-        self._tostr(i2d_PublicKey)
-    }
-
-    /**
-     * Loads a serialized form of the public key, as produced by save_pub().
-     */
-    pub fn load_pub(&mut self, s: &[u8]) {
-        self._fromstr(s, d2i_PublicKey);
-        self.parts = Public;
-    }
-
-    /**
-     * Returns a serialized form of the public and private keys, suitable for
-     * load_priv().
-     */
-    pub fn save_priv(&self) -> ~[u8] {
-        self._tostr(i2d_PrivateKey)
-    }
-    /**
-     * Loads a serialized form of the public and private keys, as produced by
-     * save_priv().
-     */
-    pub fn load_priv(&mut self, s: &[u8]) {
-        self._fromstr(s, d2i_PrivateKey);
-        self.parts = Both;
-    }
-
-    /**
-     * Returns the size of the public key modulus.
-     */
-    pub fn size(&self) -> uint {
-        unsafe {
-            RSA_size(EVP_PKEY_get1_RSA(self.evp)) as uint
-        }
-    }
-
-    /**
-     * Returns whether this pkey object can perform the specified role.
-     */
-    pub fn can(&self, r: Role) -> bool {
-        match r {
-            Encrypt =>
-                match self.parts {
-                    Neither => false,
-                    _ => true,
-                },
-            Verify =>
-                match self.parts {
-                    Neither => false,
-                    _ => true,
-                },
-            Decrypt =>
-                match self.parts {
-                    Both => true,
-                    _ => false,
-                },
-            Sign =>
-                match self.parts {
-                    Both => true,
-                    _ => false,
-                },
-        }
-    }
-
-    /**
-     * Returns the maximum amount of data that can be encrypted by an encrypt()
-     * call.
-     */
-    pub fn max_data(&self) -> uint {
-        unsafe {
-            let rsa = EVP_PKEY_get1_RSA(self.evp);
-            let len = RSA_size(rsa);
-
-            // 41 comes from RSA_public_encrypt(3) for OAEP
-            len as uint - 41u
-        }
-    }
-
-    pub fn encrypt_with_padding(&self, s: &[u8], padding: EncryptionPadding) -> ~[u8] {
-        unsafe {
-            let rsa = EVP_PKEY_get1_RSA(self.evp);
-            let len = RSA_size(rsa);
-
-            assert!(s.len() < self.max_data());
-
-            let mut r = vec::from_elem(len as uint + 1u, 0u8);
-
-            let rv = RSA_public_encrypt(
-                s.len() as c_uint,
-                s.as_ptr(),
-                r.as_mut_ptr(),
-                rsa,
-                openssl_padding_code(padding));
-
-            if rv < 0 as c_int {
-                ~[]
-            } else {
-                r.truncate(rv as uint);
-                r
-            }
-        }
-    }
-
-    pub fn decrypt_with_padding(&self, s: &[u8], padding: EncryptionPadding) -> ~[u8] {
-        unsafe {
-            let rsa = EVP_PKEY_get1_RSA(self.evp);
-            let len = RSA_size(rsa);
-
-            assert_eq!(s.len() as c_uint, RSA_size(rsa));
-
-            let mut r = vec::from_elem(len as uint + 1u, 0u8);
-
-            let rv = RSA_private_decrypt(
-                s.len() as c_uint,
-                s.as_ptr(),
-                r.as_mut_ptr(),
-                rsa,
-                openssl_padding_code(padding));
-
-            if rv < 0 as c_int {
-                ~[]
-            } else {
-                r.truncate(rv as uint);
-                r
-            }
-        }
-    }
-
-    /**
-     * Encrypts data using OAEP padding, returning the encrypted data. The
-     * supplied data must not be larger than max_data().
-     */
-    pub fn encrypt(&self, s: &[u8]) -> ~[u8] { self.encrypt_with_padding(s, OAEP) }
-
-    /**
-     * Decrypts data, expecting OAEP padding, returning the decrypted data.
-     */
-    pub fn decrypt(&self, s: &[u8]) -> ~[u8] { self.decrypt_with_padding(s, OAEP) }
-
-    /**
-     * Signs data, using OpenSSL's default scheme and sha256. Unlike encrypt(),
-     * can process an arbitrary amount of data; returns the signature.
-     */
-    pub fn sign(&self, s: &[u8]) -> ~[u8] { self.sign_with_hash(s, SHA256) }
-
-    /**
-     * Verifies a signature s (using OpenSSL's default scheme and sha256) on a
-     * message m. Returns true if the signature is valid, and false otherwise.
-     */
-    pub fn verify(&self, m: &[u8], s: &[u8]) -> bool { self.verify_with_hash(m, s, SHA256) }
-
-    pub fn sign_with_hash(&self, s: &[u8], hash: HashType) -> ~[u8] {
-        unsafe {
-            let rsa = EVP_PKEY_get1_RSA(self.evp);
-            let mut len = RSA_size(rsa);
-            let mut r = vec::from_elem(len as uint + 1u, 0u8);
-
-            let rv = RSA_sign(
-                openssl_hash_nid(hash),
-                s.as_ptr(),
-                s.len() as c_uint,
-                r.as_mut_ptr(),
-                &mut len,
-                rsa);
-
-            if rv < 0 as c_int {
-                ~[]
-            } else {
-                r.truncate(len as uint);
-                r
-            }
-        }
-    }
-
-    pub fn verify_with_hash(&self, m: &[u8], s: &[u8], hash: HashType) -> bool {
-        unsafe {
-            let rsa = EVP_PKEY_get1_RSA(self.evp);
-
-            let rv = RSA_verify(
-                openssl_hash_nid(hash),
-                m.as_ptr(),
-                m.len() as c_uint,
-                s.as_ptr(),
-                s.len() as c_uint,
-                rsa
-            );
-
-            rv == 1 as c_int
-        }
-    }
-}
-
-impl Drop for PKey {
-    fn drop(&mut self) {
-        unsafe {
-            EVP_PKEY_free(self.evp);
-        }
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use hash::{MD5, SHA1};
-
-    #[test]
-    fn test_gen_pub() {
-        let mut k0 = super::PKey::new();
-        let mut k1 = super::PKey::new();
-        k0.gen(512u);
-        k1.load_pub(k0.save_pub());
-        assert_eq!(k0.save_pub(), k1.save_pub());
-        assert_eq!(k0.size(), k1.size());
-        assert!(k0.can(super::Encrypt));
-        assert!(k0.can(super::Decrypt));
-        assert!(k0.can(super::Verify));
-        assert!(k0.can(super::Sign));
-        assert!(k1.can(super::Encrypt));
-        assert!(!k1.can(super::Decrypt));
-        assert!(k1.can(super::Verify));
-        assert!(!k1.can(super::Sign));
-    }
-
-    #[test]
-    fn test_gen_priv() {
-        let mut k0 = super::PKey::new();
-        let mut k1 = super::PKey::new();
-        k0.gen(512u);
-        k1.load_priv(k0.save_priv());
-        assert_eq!(k0.save_priv(), k1.save_priv());
-        assert_eq!(k0.size(), k1.size());
-        assert!(k0.can(super::Encrypt));
-        assert!(k0.can(super::Decrypt));
-        assert!(k0.can(super::Verify));
-        assert!(k0.can(super::Sign));
-        assert!(k1.can(super::Encrypt));
-        assert!(k1.can(super::Decrypt));
-        assert!(k1.can(super::Verify));
-        assert!(k1.can(super::Sign));
-    }
-
-    #[test]
-    fn test_encrypt() {
-        let mut k0 = super::PKey::new();
-        let mut k1 = super::PKey::new();
-        let msg = ~[0xdeu8, 0xadu8, 0xd0u8, 0x0du8];
-        k0.gen(512u);
-        k1.load_pub(k0.save_pub());
-        let emsg = k1.encrypt(msg);
-        let dmsg = k0.decrypt(emsg);
-        assert!(msg == dmsg);
-    }
-
-    #[test]
-    fn test_encrypt_pkcs() {
-        let mut k0 = super::PKey::new();
-        let mut k1 = super::PKey::new();
-        let msg = ~[0xdeu8, 0xadu8, 0xd0u8, 0x0du8];
-        k0.gen(512u);
-        k1.load_pub(k0.save_pub());
-        let emsg = k1.encrypt_with_padding(msg, super::PKCS1v15);
-        let dmsg = k0.decrypt_with_padding(emsg, super::PKCS1v15);
-        assert!(msg == dmsg);
-    }
-
-    #[test]
-    fn test_sign() {
-        let mut k0 = super::PKey::new();
-        let mut k1 = super::PKey::new();
-        let msg = ~[0xdeu8, 0xadu8, 0xd0u8, 0x0du8];
-        k0.gen(512u);
-        k1.load_pub(k0.save_pub());
-        let sig = k0.sign(msg);
-        let rv = k1.verify(msg, sig);
-        assert!(rv == true);
-    }
-
-    #[test]
-    fn test_sign_hashes() {
-        let mut k0 = super::PKey::new();
-        let mut k1 = super::PKey::new();
-        let msg = ~[0xdeu8, 0xadu8, 0xd0u8, 0x0du8];
-        k0.gen(512u);
-        k1.load_pub(k0.save_pub());
-
-        let sig = k0.sign_with_hash(msg, MD5);
-
-        assert!(k1.verify_with_hash(msg, sig, MD5));
-        assert!(!k1.verify_with_hash(msg, sig, SHA1));
-    }
-}