provider.info();

Provider.1=SUN (DSA key/parameter generation; DSA signing; SHA-1, MD5 digests; SecureRandom; X.509 certificates; JKS keystore; PKIX CertPathValidator; PKIX              CertPathBuilder; LDAP, Collection CertStores, JavaPolicy Policy; JavaLoginConfig Configuration)------

Provider.2=Sun RSA signature provider------

Provider.3=Sun Elliptic Curve provider (EC, ECDSA, ECDH)------

Provider.4=Sun JSSE provider(PKCS12, SunX509 key/trust factories, SSLv3, TLSv1)------

Provider.5=SunJCE Provider (implements RSA, DES, Triple DES, AES, Blowfish, ARCFOUR, RC2, PBE, Diffie-Hellman, HMAC)------

Provider.6=Sun (Kerberos v5, SPNEGO)------

Provider.7=Sun SASL provider(implements client mechanisms for: DIGEST-MD5, GSSAPI, EXTERNAL, PLAIN, CRAM-MD5, NTLM; server mechanisms for: DIGEST-MD5, GSSAPI, CRAM-MD5, NTLM)------

Provider.8=XMLDSig (DOM XMLSignatureFactory; DOM KeyInfoFactory)------

Provider.9=Sun PC/SC provider------

Provider.10=Sun‘s Microsoft Crypto API provider------

更详细的信息请参考：http://blog.csdn.net/u014682413/article/details/42080817

Java Provider 信息