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Potential for signature integrity compromise in Intel® Integrated Performance Primitives (Intel® IPP) Cryptography Domain

Intel ID:  INTEL-SA-00033
Product family:  The cryptography (CP) domain in Intel® Integrated Performance Primitives (Intel® IPP)
Impact of vulnerability Information Disclosure
Severity rating Moderate
Original release:  Sep 11, 2012
Last revised:  Sep 11, 2012


The cryptography (CP) domain in Intel’s newest version of Intel® Integrated Performance Primitives (Intel® IPP) v7.1 has been enhanced to improve its security and customers are strongly urged to update to this release.


Intel IPP v7.1 introduces Intel® AVX & Intel® AVX2 performance optimizations for faster floating-point and integer operations in the signal processing and image processing domains. Additional Improvements have been made to the CP domain including AES key expansion, RSA-based signature generation and ECC prime field point multiplication. Customers can get these security improvements by linking with v7.1 of Intel® IPP. For additional information on performance impact to RSA and ECC functions, please see the Recommendations below.

Affected products: 

The cryptography (CP) domain in Intel® Integrated Performance Primitives (Intel® IPP) versions prior to 7.1.


Customers are strongly urged to update to version 7.1 which can be obtained from this URL:

To mitigate the potential reduction in performance, some source code changes are recommended for RSA functions. The following RSA functions can be can be initialized two different ways:

  • private key pair:
    • ippsRSASetKey(pD, ippRSAkeyD, pRSA)
    • ippsRSASetKey(pN, ippRSAkeyN, pRSA)
  • private key quintuple:
    • ippsRSASetKey(pP, ippRSAkeyP, pRSA)
    • ippsRSASetKey(pQ, ippRSAkeyQ, pRSA)
    • ippsRSASetKey(pdP, ippRSAkeyDpP, pRSA)
    • ippsRSASetKey(pdQ, ippRSAkeyDq, pRSA)
    • ippsRSASetKey(pQinv, ippRSAkeyQinv, pRSA)

If a private key quintuple is used, code changes should be made to additionally provide the private exponent by the calling ippsRSASetKey(pE, ippRSAkeyE, pRSA) function to avoid a 3-4x performance penalty to RSA Sign operations.

Finally for ECC functions some performance degradation, perhaps up to 10%, may be expected for the functions:

  • ippsECCPMulPointScalar()
  • ippsECCPGenKeyPair()
  • ippsECCPPublicKey()
  • ippsECCPValidateKeyPair()
  • ippsECCPSharedSecretDH()
  • ippsECCPSharedSecretDHC()

At this time there is no known mitigation for this performance impact in ECC.

Revision history:






Initial Release

Related Information:

Optimization Notice                                                                                         Notice revision #20110804

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