module YolSso::PKCS7Encoder
Constants
- BLOCK_SIZE
Public Instance Methods
decode(text)
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# File lib/yol_sso/helpers/pkcs7_encoder.rb, line 9 def decode(text) pad = text[-1].ord pad = 0 if (pad < 1 || pad > BLOCK_SIZE) size = text.size - pad text[0...size] end
encode(text)
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对需要加密的明文进行填充补位 返回补齐明文字符串
# File lib/yol_sso/helpers/pkcs7_encoder.rb, line 18 def encode(text) # 计算需要填充的位数 amount_to_pad = BLOCK_SIZE - (text.length % BLOCK_SIZE) amount_to_pad = BLOCK_SIZE if amount_to_pad == 0 # 获得补位所用的字符 pad_chr = amount_to_pad.chr "#{text}#{pad_chr * amount_to_pad}" end