blob: a485477c5523158d3af4c2771fa40c9bbf890494 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
/*
* This file is part of LibEuFin.
* Copyright (C) 2024 Taler Systems S.A.
* LibEuFin is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation; either version 3, or
* (at your option) any later version.
* LibEuFin is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General
* Public License for more details.
* You should have received a copy of the GNU Affero General Public
* License along with LibEuFin; see the file COPYING. If not, see
* <http://www.gnu.org/licenses/>
*/
package tech.libeufin.nexus
import com.itextpdf.kernel.pdf.PdfDocument
import com.itextpdf.kernel.pdf.PdfWriter
import com.itextpdf.layout.Document
import com.itextpdf.layout.element.AreaBreak
import com.itextpdf.layout.element.Paragraph
import java.security.interfaces.RSAPrivateCrtKey
import java.time.LocalDateTime
import java.time.format.DateTimeFormatter
import java.util.*
import java.io.ByteArrayOutputStream
import tech.libeufin.common.crypto.*
/**
* Generate the PDF document with all the client public keys
* to be sent on paper to the bank.
*/
fun generateKeysPdf(
clientKeys: ClientPrivateKeysFile,
cfg: EbicsSetupConfig
): ByteArray {
val po = ByteArrayOutputStream()
val pdfWriter = PdfWriter(po)
val pdfDoc = PdfDocument(pdfWriter)
val date = LocalDateTime.now()
val dateStr = date.format(DateTimeFormatter.ISO_LOCAL_DATE)
fun formatHex(ba: ByteArray): String {
var out = ""
for (i in ba.indices) {
val b = ba[i]
if (i > 0 && i % 16 == 0) {
out += "\n"
}
out += java.lang.String.format("%02X", b)
out += " "
}
return out
}
fun writeCommon(doc: Document) {
doc.add(
Paragraph(
"""
Datum: $dateStr
Host-ID: ${cfg.ebicsHostId}
User-ID: ${cfg.ebicsUserId}
Partner-ID: ${cfg.ebicsPartnerId}
ES version: A006
""".trimIndent()
)
)
}
fun writeKey(doc: Document, priv: RSAPrivateCrtKey) {
val pub = CryptoUtil.getRsaPublicFromPrivate(priv)
val hash = CryptoUtil.getEbicsPublicKeyHash(pub)
doc.add(Paragraph("Exponent:\n${formatHex(pub.publicExponent.toByteArray())}"))
doc.add(Paragraph("Modulus:\n${formatHex(pub.modulus.toByteArray())}"))
doc.add(Paragraph("SHA-256 hash:\n${formatHex(hash)}"))
}
fun writeSigLine(doc: Document) {
doc.add(Paragraph("Ort / Datum: ________________"))
doc.add(Paragraph("Firma / Name: ________________"))
doc.add(Paragraph("Unterschrift: ________________"))
}
Document(pdfDoc).use {
it.add(Paragraph("Signaturschlüssel").setFontSize(24f))
writeCommon(it)
it.add(Paragraph("Öffentlicher Schlüssel (Public key for the electronic signature)"))
writeKey(it, clientKeys.signature_private_key)
it.add(Paragraph("\n"))
writeSigLine(it)
it.add(AreaBreak())
it.add(Paragraph("Authentifikationsschlüssel").setFontSize(24f))
writeCommon(it)
it.add(Paragraph("Öffentlicher Schlüssel (Public key for the identification and authentication signature)"))
writeKey(it, clientKeys.authentication_private_key)
it.add(Paragraph("\n"))
writeSigLine(it)
it.add(AreaBreak())
it.add(Paragraph("Verschlüsselungsschlüssel").setFontSize(24f))
writeCommon(it)
it.add(Paragraph("Öffentlicher Schlüssel (Public encryption key)"))
writeKey(it, clientKeys.encryption_private_key)
it.add(Paragraph("\n"))
writeSigLine(it)
}
pdfWriter.flush()
return po.toByteArray()
}
|
