Topic: 0x00 prefix for R and S values in DER signature (Read 1151 times)
Thanks for that clear explanation!
It's a DER requirement to prefix a 0x00 byte to an encoded integer if the integer otherwise starts with a byte >= 0x80. If not, it would be interpreted as a negative number.
I've noticed that some scriptsigs have a 0x00 prefixing the 32 byte R and S values in the signatures, and some signatures do not have that. I was hoping somebody knows the reason behind that and can explain to me if and when the prefix is necessary, and why.
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