What does Intel IPP status -176 (ippStsShareKeyErr) mean?

 
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ippStsMessageErr ippStsIvalidPublicKey

ippStsShareKeyErr

This ECC status is tied to shared-secret derivation rather than to ordinary symmetric encryption. It appears when the shared key produced or supplied for an ECC key-agreement operation fails the library checks.

Investigate the peer public key, local private key, curve domain, and key-derivation step together. A wrong peer curve or invalid public point can produce a failure that later shows up as a shared-key problem.

Do not skip these inputs

  • The peer public key validation result.
  • The local private key range check.
  • The curve identifier and field parameters used by both sides.
  • The KDF or export length requested after the raw shared secret is produced.

Intel IPP Error Reporting · Intel IPP Cryptography Reference · NIST SP 800-56A key agreement guidance


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