cmac alternatives and similar shards

Based on the "Cryptography" category.
Alternatively, view cmac alternatives based on common mentions on social networks and blogs.

sodium.cr

7.7 0.0 cmac VS sodium.cr

Crystal wrapper for the libsodium crypto API
monocypher.cr

4.7 4.6 cmac VS monocypher.cr

Crystal bindings for Monocypher

InfluxDB - Power Real-Time Data Analytics at Scale

Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

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crystal-sha3

3.5 0.0 cmac VS crystal-sha3

An SHA-3 implementation written in Crystal.
ed25519

2.8 10.0 cmac VS ed25519

Ed25519 high-performance public-key signature system for crystal lang

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README

Crystal Lang CMAC

Crystal implementation of the Cipher-based Message Authentication Code (CMAC) as defined in RFC4493, RFC4494, and RFC4615. Message authentication codes provide integrity protection of data given that two parties share a secret key.

key = Random.new.random_bytes(16)
message = "attack at dawn"
cmac = CMAC.new(key)
cmac.sign(message)
 => Bytes[246, 184, 193, 76, 93, 115, 191, 26, 135, 60, 164, 161, 90, 224, 102, 170]

Once you've obtained the signature (also called a tag) of a message you can use CMAC to verify it as well.

tag = Bytes[246, 184, 193, 76, 93, 115, 191, 26, 135, 60, 164, 161, 90, 224, 102, 170]
cmac.valid_message?(tag, message)
 => true
cmac.valid_message?(tag, "attack at dusk")
 => false

CMAC can also be used with a variable length input key as described in RFC4615.

key = "setec astronomy"
message = "attack at dawn"
cmac = CMAC.new(key)
cmac.sign(message)
 => Bytes[92, 17, 144, 230, 145, 178, 196, 130, 96, 144, 166, 236, 58, 14, 28, 243]