diff options
| -rw-r--r-- | main.go | 9 |
1 files changed, 7 insertions, 2 deletions
@@ -68,11 +68,11 @@ func init() { {{- if .Message }} <p><strong>{{ .Message }}</strong></p> {{- end }} -<p>Select a value, such that when it is appended to the decoded form of the following base64 string, and a SHA-256 hash is taken as a whole, the first {{ .NeedBits }} bits of the SHA-256 hash are zeros. Within one octet, higher bits are considered to be in front of lower bits.</p> +<p>Select an nonce shorter than or equal to 32 bytes, such that when it is appended to the decoded form of the following base64 string, and a SHA-256 hash is taken as a whole, the first {{ .NeedBits }} bits of the SHA-256 hash are zeros. Within one octet, higher bits are considered to be in front of lower bits.</p> <p>{{ .UnsignedTokenBase64 }}</p> <form method="POST"> <p> -Encode your selected value in base64 and submit it below: +Encode your selected nonce in base64 and submit it below: </p> <input name="powxy" type="text" /> <input type="submit" value="Submit" /> @@ -221,6 +221,11 @@ func main() { return } + if len(nonce) > 32 { + authPage("Your submission was too long.") + return + } + h := sha256.New() h.Write(expectedToken[:sha256.Size]) h.Write(nonce) |