diff options
Diffstat (limited to 'libqpdf/Pl_SHA2.cc')
-rw-r--r-- | libqpdf/Pl_SHA2.cc | 158 |
1 files changed, 0 insertions, 158 deletions
diff --git a/libqpdf/Pl_SHA2.cc b/libqpdf/Pl_SHA2.cc deleted file mode 100644 index 17eff7e3..00000000 --- a/libqpdf/Pl_SHA2.cc +++ /dev/null @@ -1,158 +0,0 @@ -#include <qpdf/Pl_SHA2.hh> -#include <stdexcept> -#include <cstdio> -#include <qpdf/PointerHolder.hh> -#include <qpdf/QUtil.hh> - -Pl_SHA2::Pl_SHA2(int bits, Pipeline* next) : - Pipeline("sha2", next), - in_progress(false), - bits(0) -{ - if (bits) - { - resetBits(bits); - } -} - -Pl_SHA2::~Pl_SHA2() -{ -} - -void -Pl_SHA2::badBits() -{ - throw std::logic_error("Pl_SHA2 has unexpected value for bits"); -} - -void -Pl_SHA2::write(unsigned char* buf, size_t len) -{ - if (! this->in_progress) - { - switch (bits) - { - case 256: - sph_sha256_init(&this->ctx256); - break; - case 384: - sph_sha384_init(&this->ctx384); - break; - case 512: - sph_sha512_init(&this->ctx512); - break; - default: - badBits(); - break; - } - this->in_progress = true; - } - - // Write in chunks in case len is too big to fit in an int. - // Assume int is at least 32 bits. - static size_t const max_bytes = 1 << 30; - size_t bytes_left = len; - unsigned char* data = buf; - while (bytes_left > 0) - { - size_t bytes = (bytes_left >= max_bytes ? max_bytes : bytes_left); - switch (bits) - { - case 256: - sph_sha256(&this->ctx256, data, bytes); - break; - case 384: - sph_sha384(&this->ctx384, data, bytes); - break; - case 512: - sph_sha512(&this->ctx512, data, bytes); - break; - default: - badBits(); - break; - } - bytes_left -= bytes; - data += bytes; - } - - if (this->getNext(true)) - { - this->getNext()->write(buf, len); - } -} - -void -Pl_SHA2::finish() -{ - if (this->getNext(true)) - { - this->getNext()->finish(); - } - switch (bits) - { - case 256: - sph_sha256_close(&this->ctx256, sha256sum); - break; - case 384: - sph_sha384_close(&this->ctx384, sha384sum); - break; - case 512: - sph_sha512_close(&this->ctx512, sha512sum); - break; - default: - badBits(); - break; - } - this->in_progress = false; -} - -void -Pl_SHA2::resetBits(int bits) -{ - if (this->in_progress) - { - throw std::logic_error( - "bit reset requested for in-progress SHA2 Pipeline"); - } - if (! ((bits == 256) || (bits == 384) || (bits == 512))) - { - throw std::logic_error("Pl_SHA2 called with bits != 256, 384, or 512"); - } - this->bits = bits; -} - -std::string -Pl_SHA2::getRawDigest() -{ - std::string result; - switch (bits) - { - case 256: - result = std::string(reinterpret_cast<char*>(this->sha256sum), - sizeof(this->sha256sum)); - break; - case 384: - result = std::string(reinterpret_cast<char*>(this->sha384sum), - sizeof(this->sha384sum)); - break; - case 512: - result = std::string(reinterpret_cast<char*>(this->sha512sum), - sizeof(this->sha512sum)); - break; - default: - badBits(); - break; - } - return result; -} - -std::string -Pl_SHA2::getHexDigest() -{ - if (this->in_progress) - { - throw std::logic_error( - "digest requested for in-progress SHA2 Pipeline"); - } - return QUtil::hex_encode(getRawDigest()); -} |