I had to do this in one of my apps. I used java’s nameUUIDFromBytes from java.util
UUID.nameUUIDFromBytes(map.v as byte[]).toString() If I read the docs right, it uses sha-1 under the hood. Erick Nelson Senior Developer | IT Application Development HD Supply Facilities Maintenance O: 858-831-2209 C: 760-473-7542 H: 760-930-0461 erick.nel...@hdsupply.com<mailto:billy.polihrona...@hdsupply.com> From: Winnebeck, Jason [mailto:jason.winneb...@windstream.com] Sent: Friday, March 04, 2016 6:40 AM To: users@groovy.apache.org Subject: RE: Groovy Hash Calculations Here is how I would do it. I provide both a “short” solution and a “long” one. I would use the “short” solution if I was making for example a developer only tool and I knew I was only hashing small things for example a configuration file in a build script and want a one-liner. Otherwise I’d use the “long” version. //If the content is guaranteed to be short: def content = new ByteArrayInputStream("Here be dragons".bytes) println MessageDigest.getInstance("SHA1").digest(content.bytes).encodeHex() //If the content might be arbitrarily long: content = new ByteArrayInputStream("Here be dragons".bytes) def digest = MessageDigest.getInstance("SHA1") content.eachByte(4096) { bytes, len -> digest.update(bytes, 0, len) } println digest.digest().encodeHex() Jason From: Gerald Wiltse [mailto:jerrywil...@gmail.com] Sent: Friday, March 04, 2016 9:18 AM To: users@groovy.apache.org<mailto:users@groovy.apache.org> Subject: Groovy Hash Calculations Hello All, I have this block, it's pretty compressed, just wondering if there is a more groovy way to handle reading the buffer and computing the hash. def messageDigest = MessageDigest.getInstance("SHA1") def dis = new DigestInputStream(content, messageDigest) byte[] buffer = new byte[1024]; while (dis.read(buffer) != -1) {} def sha1Hex = new BigInteger(1, messageDigest.digest()).toString(16).padLeft(40, '0') Gerald R. Wiltse jerrywil...@gmail.com<mailto:jerrywil...@gmail.com> ________________________________ This email message and any attachments are for the sole use of the intended recipient(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message and any attachments.
