WLS 12.1.3 on Java 7u51 gets exception during SSL handshake:

java.lang.RuntimeException: Could not generate DH keypair
@ at sun.security.ssl.Handshaker.checkThrown(Handshaker.java:1287)
.....
Caused by: java.lang.RuntimeException: Could not generate DH keypair
@ at sun.security.ssl.DHCrypt.(DHCrypt.java:136)
at
@ sun.security.ssl.ClientHandshaker.serverKeyExchange(ClientHandshaker.java:621)

......
@ Caused by: java.security.InvalidAlgorithmParameterException: Prime size must
be multiple of 64, and can only range from 512 to 1024 (inclusive)
at
com.sun.crypto.provider.DHKeyPairGenerator.initialize(DHKeyPairGenerator.java:
120)