[SECURITY] [DLA 190-1] libgcrypt11 security update

[Thorsten Alteholz <debian@alteholz.de>]

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Package        : libgcrypt11
Version        : 1.4.5-2+squeeze3
CVE ID         : CVE-2014-3591 CVE-2015-0837

Multiple vulnerabilities were discovered in libgcrypt:

CVE-2014-3591

    The Elgamal decryption routine was susceptible to a side-channel
    attack discovered by researchers of Tel Aviv University. Ciphertext
    blinding was enabled to counteract it. Note that this may have a
    quite noticeable impact on Elgamal decryption performance.

CVE-2015-0837

    The modular exponentiation routine mpi_powm() was susceptible to a
    side-channel attack caused by data-dependent timing variations when
    accessing its internal pre-computed table.

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