d0a9367017
using AM_PATH_LIBGCRYPT to check for libgcrypt removed AC_MSG_RESULT in configure.ac; added phony "example" target in Makefile.am if libcrypt not found
24 lines
1.1 KiB
Plaintext
24 lines
1.1 KiB
Plaintext
Dependencies:
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Jansson 2.0 with 'long long' support
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Example dependencies:
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Jansson 2.1 (to read JSON from stdin)
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libgcrypt (for SHA256)
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For usage, check out example.c. Run "make example" to build it.
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Note that you must assign blkmk_sha256_impl to a function pointer:
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bool mysha256(void *hash_out, const void *data, size_t datasz)
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hash_out must be able to overlap with data!
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Also note that you should NOT roll ntime for data retrieved without explicitly
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checking that it falls within the template's limitations (mintime, maxtime,
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mintimeoff, and maxtimeoff); read the BIP 23 specification in detail to
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understand how they work. It is usually best to simply get more data as often
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as it is needed. For blkmk_get_mdata, you may specify that you intend to roll
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the ntime header exactly once per second past usetime - it will then set
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*out_expires such that the expiration occurs before you roll beyond any ntime
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limits. If you are rolling ntime at any rate other than once per second, you
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should NOT specify can_roll_ntime to blkmk_get_mdata, and must check that your
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usage falls within the explicit template limits yourself.
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