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Update evp.lua #98

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36 changes: 31 additions & 5 deletions lib/resty/evp.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@

local ffi = require "ffi"
local _C = ffi.C
local _M = { _VERSION = "0.0.2" }
local _M = { _VERSION = "0.0.3" }


local CONST = {
Expand Down Expand Up @@ -103,12 +103,38 @@ int EVP_DigestVerifyInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
int EVP_DigestVerifyFinal(EVP_MD_CTX *ctx,
unsigned char *sig, size_t siglen);

// openssl11
EVP_MD_CTX *EVP_MD_CTX_new(void);
void EVP_MD_CTX_free(EVP_MD_CTX *ctx);

// Fingerprints
int X509_digest(const X509 *data,const EVP_MD *type,
unsigned char *md, unsigned int *len);

]]

local evp_md_ctx_new, evp_md_ctx_free
local openssl11, e = pcall(function ()
local ctx = _C.EVP_MD_CTX_new()
_C.EVP_MD_CTX_free(ctx)
end)

if openssl11 then
evp_md_ctx_new = function ()
return _C.EVP_MD_CTX_new()
end
evp_md_ctx_free = function (ctx)
_C.EVP_MD_CTX_free(ctx)
end
else
evp_md_ctx_new = function ()
return _C.EVP_MD_CTX_create()
end
evp_md_ctx_free = function (ctx)
_C.EVP_MD_CTX_destroy(ctx)
end
end


local function _err(ret)
local code = _C.ERR_get_error()
Expand Down Expand Up @@ -157,11 +183,11 @@ function RSASigner.sign(self, message, digest_name)
local buf = ffi.new("unsigned char[?]", 1024)
local len = ffi.new("size_t[1]", 1024)

local ctx = _C.EVP_MD_CTX_create()
local ctx = evp_md_ctx_new()
if not ctx then
return _err()
end
ffi.gc(ctx, _C.EVP_MD_CTX_destroy)
ffi.gc(ctx, evp_md_ctx_free)

local md = _C.EVP_get_digestbyname(digest_name)
if not md then
Expand Down Expand Up @@ -213,11 +239,11 @@ function RSAVerifier.verify(self, message, sig, digest_name)
return _err(false)
end

local ctx = _C.EVP_MD_CTX_create()
local ctx = evp_md_ctx_new()
if not ctx then
return _err(false)
end
ffi.gc(ctx, _C.EVP_MD_CTX_destroy)
ffi.gc(ctx, evp_md_ctx_free)

if _C.EVP_DigestInit_ex(ctx, md, nil) ~= 1 then
return _err(false)
Expand Down