Introduced WebCrypto API according to W3C spec.

The following methods were implemented:
    crypto.getRandomValues()
    crypto.subtle.importKey()
        format: raw, pkcs8, spki
        algorithm: AES-CBC, AES-CTR, AES-GCM,
            ECDSA, HKDF, HMAC, PBKDF2,
            RSASSA-PKCS1-v1_5, RSA-OAEP, RSA-PSS
    crypto.subtle.decrypt()
    crypto.subtle.encrypt()
        algorithm: AES-CBC, AES-CTR, AES-GCM,
            RSA-OAEP
    crypto.subtle.deriveBits()
    crypto.subtle.deriveKey()
        algorithm: HKDF, PBKDF2
    crypto.subtle.digest()
        algorithm: SHA-1, SHA-256, SHA-384, SHA-512
    crypto.subtle.sign()
    crypto.subtle.verify()
        algorithm: ECDSA, HMAC, RSASSA-PKCS1-v1_5, RSA-PSS
58 files changed