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Remove trailing whitespace (#3668)

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This commit is contained in:
John Vandenberg
2022-07-07 17:18:20 +08:00
committed by GitHub
parent 0af9524e16
commit 0e6e16645c
1330 changed files with 23570 additions and 23571 deletions
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46
Foundation/include/Poco/PBKDF2Engine.h
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@@ -31,25 +31,25 @@ template <class PRF>
class PBKDF2Engine: public DigestEngine
/// This class implements the Password-Based Key Derivation Function 2,
/// as specified in RFC 2898. The underlying DigestEngine (HMACEngine, etc.),
/// which must accept the passphrase as constructor argument (std::string),
/// must be given as template argument.
/// which must accept the passphrase as constructor argument (std::string),
/// must be given as template argument.
///
/// PBKDF2 (Password-Based Key Derivation Function 2) is a key derivation function
/// that is part of RSA Laboratories' Public-Key Cryptography Standards (PKCS) series,
/// specifically PKCS #5 v2.0, also published as Internet Engineering Task Force's
/// RFC 2898. It replaces an earlier standard, PBKDF1, which could only produce
/// PBKDF2 (Password-Based Key Derivation Function 2) is a key derivation function
/// that is part of RSA Laboratories' Public-Key Cryptography Standards (PKCS) series,
/// specifically PKCS #5 v2.0, also published as Internet Engineering Task Force's
/// RFC 2898. It replaces an earlier standard, PBKDF1, which could only produce
/// derived keys up to 160 bits long.
///
/// PBKDF2 applies a pseudorandom function, such as a cryptographic hash, cipher, or
/// HMAC to the input password or passphrase along with a salt value and repeats the
/// process many times to produce a derived key, which can then be used as a
/// cryptographic key in subsequent operations. The added computational work makes
/// password cracking much more difficult, and is known as key stretching.
/// When the standard was written in 2000, the recommended minimum number of
/// iterations was 1000, but the parameter is intended to be increased over time as
/// CPU speeds increase. Having a salt added to the password reduces the ability to
/// use precomputed hashes (rainbow tables) for attacks, and means that multiple
/// passwords have to be tested individually, not all at once. The standard
/// PBKDF2 applies a pseudorandom function, such as a cryptographic hash, cipher, or
/// HMAC to the input password or passphrase along with a salt value and repeats the
/// process many times to produce a derived key, which can then be used as a
/// cryptographic key in subsequent operations. The added computational work makes
/// password cracking much more difficult, and is known as key stretching.
/// When the standard was written in 2000, the recommended minimum number of
/// iterations was 1000, but the parameter is intended to be increased over time as
/// CPU speeds increase. Having a salt added to the password reduces the ability to
/// use precomputed hashes (rainbow tables) for attacks, and means that multiple
/// passwords have to be tested individually, not all at once. The standard
/// recommends a salt length of at least 64 bits. [Wikipedia]
///
/// The PBKDF2 algorithm is implemented as a DigestEngine. The passphrase is specified
@@ -65,30 +65,30 @@ public:
{
PRF_DIGEST_SIZE = PRF::DIGEST_SIZE
};
PBKDF2Engine(const std::string& salt, unsigned c = 4096, Poco::UInt32 dkLen = PRF_DIGEST_SIZE):
_s(salt),
_c(c),
_dkLen(dkLen)
{
{
_result.reserve(_dkLen + PRF_DIGEST_SIZE);
}
~PBKDF2Engine()
{
}
std::size_t digestLength() const
{
return _dkLen;
}
void reset()
{
_p.clear();
_result.clear();
}
const DigestEngine::Digest& digest()
{
Poco::UInt32 i = 1;
@@ -105,7 +105,7 @@ protected:
{
_p.append(reinterpret_cast<const char*>(data), length);
}
void f(Poco::UInt32 i)
{
PRF prf(_p);