[ https://issues.jboss.org/browse/ELY-302?page=com.atlassian.jira.plugin.sy... ] Jan Kalina edited comment on ELY-302 at 11/4/17 5:27 AM: --------------------------------------------------------- SHA-512-256 cannot be implemented using SHA-512 - truncation is not sufficient - the initialization vector needs to be different too, which MessageDigest API does not allow - only by extending JDK-specific class it would be possible... I see two possibilities: * to rely on MessageDigest SHA-512-256 provided by bouncycastle of other library (when not present any SHA-512-256 provider, it would be unsupported) * to add custom implementation of SHA-512-256 as part of elytron - will try... was (Author: honza889): SHA-512-256 cannot be implemented using SHA-512 - the initialization vector would have to be different, which MessageDigest API does not allow - sun-specific SHA5 class would have to be extended. There are two possibilities: * to rely on MessageDigest SHA-512-256 provided by bouncycastle of other library (when not present any SHA-512-256 provider, it would be unsupported) * to add custom implementation of SHA-512-256 as part of elytron - will try... -- This message was sent by Atlassian JIRA (v7.5.0#75005)