Default to SSHA-256 as API key stored credential hasher
#120997
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SSHA-256 for API key credential hashSSHA-256 as API key credential hash
SSHA-256 as API key credential hashSSHA-256 as API key stored credential hash
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SSHA-256 as API key stored credential hashSSHA-256 as API key stored credential hash
SSHA-256 as API key stored credential hashSSHA-256 as API key stored credential hasher
x-pack/plugin/security/src/main/java/org/elasticsearch/xpack/security/Security.java
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x-pack/plugin/security/src/test/java/org/elasticsearch/xpack/security/SecurityTests.java
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slobodanadamovic
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Jan 29, 2025
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API keys are high-entropy secure random strings. This means that the additional work factor of functions like PBKDF or bcrypt are not necessary, and a faster hash function like salted SHA-256 provides adequate security against offline attacks (hash collision, brute force, etc.).
This PR adds
SSHA-256to the list of supported stored hash algorithms for API key secrets, and makes it the default algorithm. Additionally, this PR changes the format of API key secrets, moving from an encoded UUID to a random string which increase the entropy of API keys from 122 bits to 128 bits, without changing overall secret length.Relates: ES-9504