| // Copyright 2008, Google Inc. |
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| // |
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| // * Redistributions in binary form must reproduce the above |
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| // in the documentation and/or other materials provided with the |
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| // this software without specific prior written permission. |
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| |
| #ifndef BASE_MD5_H__ |
| #define BASE_MD5_H__ |
| |
| #include <string> |
| |
| // These functions perform MD5 operations. The simplest call is MD5Sum to |
| // generate the MD5 sum of the given data. |
| // |
| // You can also compute the MD5 sum of data incrementally by making multiple |
| // calls to MD5Update: |
| // MD5Context ctx; // intermediate MD5 data: do not use |
| // MD5Init(&ctx); |
| // MD5Update(&ctx, data1, length1); |
| // MD5Update(&ctx, data2, length2); |
| // ... |
| // |
| // MD5Digest digest; // the result of the computation |
| // MD5Final(&digest, &ctx); |
| // |
| // You can call MD5DigestToBase16 to generate a string of the digest. |
| |
| // The output of an MD5 operation |
| typedef struct MD5Digest_struct { |
| unsigned char a[16]; |
| } MD5Digest; |
| |
| // Used for storing intermediate data during an MD5 computation. Callers |
| // should not access the data. |
| typedef char MD5Context[88]; |
| |
| // Computes the MD5 sum of the given data buffer with the given length. |
| // The given 'digest' structure will be filled with the result data. |
| void MD5Sum(const void* data, size_t length, MD5Digest* digest); |
| |
| // Initializes the given MD5 context structure for subsequent calls to |
| // MD5Update. |
| void MD5Init(MD5Context* context); |
| |
| // For the given buffer of data, updates the given MD5 context with the sum of |
| // the data. You can call this any number of times during the computation, |
| // exept that MD5Init must have been called first. |
| void MD5Update(MD5Context* context, const void* buf, size_t len); |
| |
| // Finalizes the MD5 operation and fills the buffer with the digest. |
| void MD5Final(MD5Digest* digest, MD5Context* pCtx); |
| |
| // Converts a digest into human-readable hexadecimal. |
| std::string MD5DigestToBase16(const MD5Digest& digest); |
| |
| // Returns the MD5 (in hexadecimal) of a string. |
| std::string MD5String(const std::string& str); |
| |
| #endif // BASE_MD5_H__ |